String.Concat String.Concat String.Concat String.Concat Method

Definition

Verkettet eine oder mehrere Instanzen von String oder die String-Darstellungen der Werte einer oder mehrerer Instanzen von Object.Concatenates one or more instances of String, or the String representations of the values of one or more instances of Object.

Überlädt

Concat(String, String, String, String) Concat(String, String, String, String) Concat(String, String, String, String) Concat(String, String, String, String)

Verkettet zwei angegebene Instanzen von String.Concatenates four specified instances of String.

Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>)
Concat(Object, Object, Object, Object) Concat(Object, Object, Object, Object) Concat(Object, Object, Object, Object) Concat(Object, Object, Object, Object)

Verkettet die Zeichenfolgenentsprechungen von vier angegebenen Objekten sowie aller in einer optionalen Parameterliste variabler Länger angegebenen Objekte.Concatenates the string representations of four specified objects and any objects specified in an optional variable length parameter list.

Concat(String, String, String) Concat(String, String, String) Concat(String, String, String) Concat(String, String, String)

Verkettet zwei angegebene Instanzen von String.Concatenates three specified instances of String.

Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>)
Concat(Object, Object, Object) Concat(Object, Object, Object) Concat(Object, Object, Object) Concat(Object, Object, Object)

Verkettet die Zeichenfolgendarstellungen von drei angegebenen Objekten.Concatenates the string representations of three specified objects.

Concat(Object, Object) Concat(Object, Object) Concat(Object, Object) Concat(Object, Object)

Verkettet die Zeichenfolgendarstellungen zweier angegebener Objekte.Concatenates the string representations of two specified objects.

Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>)
Concat(String[]) Concat(String[]) Concat(String[]) Concat(String[])

Verkettet die Elemente eines angegebenen String-Arrays.Concatenates the elements of a specified String array.

Concat(Object[]) Concat(Object[]) Concat(Object[]) Concat(Object[])

Verkettet die Zeichenfolgendarstellungen der Elemente in einem angegebenen Object-Array.Concatenates the string representations of the elements in a specified Object array.

Concat(Object) Concat(Object) Concat(Object) Concat(Object)

Erstellt die Zeichenfolgendarstellung eines angegebenen Objekts.Creates the string representation of a specified object.

Concat(IEnumerable<String>) Concat(IEnumerable<String>) Concat(IEnumerable<String>) Concat(IEnumerable<String>)

Verkettet die Member einer erstellten IEnumerable<T>-Auflistung vom Typ String.Concatenates the members of a constructed IEnumerable<T> collection of type String.

Concat(String, String) Concat(String, String) Concat(String, String) Concat(String, String)

Verkettet zwei angegebene Instanzen von String.Concatenates two specified instances of String.

Concat<T>(IEnumerable<T>) Concat<T>(IEnumerable<T>) Concat<T>(IEnumerable<T>) Concat<T>(IEnumerable<T>)

Verkettet die Member einer IEnumerable<T>-Implementierung.Concatenates the members of an IEnumerable<T> implementation.

Hinweise

Hinweis

Sie können auch die Sprache der Operator für zeichenfolgenverkettungen, verwenden, z. B. + in C#, oder & und + in Visual Basic zum Verketten von Zeichenfolgen.You can also use your language's string concatenation operator, such as + in C#, or & and + in Visual Basic, to concatenate strings. Beide Compiler übersetzt den Operator für Verkettungen in einen Aufruf einer der Überladungen der String.Concat.Both compilers translate the concatenation operator into a call to one of the overloads of String.Concat.

Concat(String, String, String, String) Concat(String, String, String, String) Concat(String, String, String, String) Concat(String, String, String, String)

Verkettet zwei angegebene Instanzen von String.Concatenates four specified instances of String.

public:
 static System::String ^ Concat(System::String ^ str0, System::String ^ str1, System::String ^ str2, System::String ^ str3);
public static string Concat (string str0, string str1, string str2, string str3);
static member Concat : string * string * string * string -> string
Public Shared Function Concat (str0 As String, str1 As String, str2 As String, str3 As String) As String

Parameter

str0
String String String String

Die erste zu verkettende Zeichenfolge.The first string to concatenate.

str1
String String String String

Die zweite zu verkettende Zeichenfolge.The second string to concatenate.

str2
String String String String

Die dritte zu verkettende Zeichenfolge.The third string to concatenate.

str3
String String String String

Die vierte zu verkettende Zeichenfolge.The fourth string to concatenate.

Gibt zurück

Die Verkettung von str0, str1, str2 und str3.The concatenation of str0, str1, str2, and str3.

Beispiele

Im folgenden Beispiel definiert ein Array von vier Buchstaben Wörter und die einzelnen Buchstaben in ein Zeichenfolgenarray gespeichert, um sie der Zeichenfolge durcheinanderbringen.The following example defines an array of four-letter words and stores their individual letters to a string array in order to scramble them. Es ruft dann die Concat(String, String, String, String) Methode, um die unverständliche Wörter wieder zusammensetzen.It then calls the Concat(String, String, String, String) method to reassemble the scrambled words.

using System;
using System.Collections;

public class Example
{
   public static void Main()
   {
      const int WORD_SIZE = 4;
      
      // Define some 4-letter words to be scrambled.
      string[] words = { "home", "food", "game", "rest" };
      // Define two arrays equal to the number of letters in each word.
      double[] keys = new double[WORD_SIZE];
      string[] letters = new string[WORD_SIZE];
      // Initialize the random number generator.
      Random rnd = new Random();
      
      // Scramble each word.
      foreach (string word in words)
      {
         for (int ctr = 0; ctr < word.Length; ctr++)
         {
            // Populate the array of keys with random numbers.
            keys[ctr] = rnd.NextDouble();
            // Assign a letter to the array of letters.
            letters[ctr] = word[ctr].ToString();
         }   
         // Sort the array. 
         Array.Sort(keys, letters, 0, WORD_SIZE, Comparer.Default);      
         // Display the scrambled word.
         string scrambledWord = String.Concat(letters[0], letters[1], 
                                              letters[2], letters[3]);
         Console.WriteLine("{0} --> {1}", word, scrambledWord);
      } 
   }
}
// The example displays output like the following:
//       home --> mheo
//       food --> oodf
//       game --> aemg
//       rest --> trse
Imports System.Collections

Module Example
   Public Sub Main()
      Const WORD_SIZE As Integer = 4
      
      ' Define some 4-letter words to be scrambled.
      Dim words() As String = { "home", "food", "game", "rest" }
      ' Define two arrays equal to the number of letters in each word.
      Dim keys(WORD_SIZE) As Double
      Dim letters(WORD_SIZE) As String
      ' Initialize the random number generator.
      Dim rnd As New Random()
      
      ' Scramble each word.
      For Each word As String In words
         For ctr As Integer = 0 To word.Length - 1
            ' Populate the array of keys with random numbers.
            keys(ctr) = rnd.NextDouble()
            ' Assign a letter to the array of letters.
            letters(ctr) = word.Chars(ctr)
         Next   
         ' Sort the array. 
         Array.Sort(keys, letters, 0, WORD_SIZE, Comparer.Default)      
         ' Display the scrambled word.
         Dim scrambledWord As String = String.Concat(letters(0), letters(1), _
                                                     letters(2), letters(3))
         Console.WriteLine("{0} --> {1}", word, scrambledWord)
      Next 
   End Sub
End Module 
' The example displays output like the following:
'       home --> mheo
'       food --> oodf
'       game --> aemg
'       rest --> trse

Hinweise

Die Methode verkettet str0, str1, str2, und str3; es werden Trennzeichen nicht hinzugefügt.The method concatenates str0, str1, str2, and str3; it does not add any delimiters.

Siehe auch

Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>)

public:
 static System::String ^ Concat(ReadOnlySpan<char> str0, ReadOnlySpan<char> str1, ReadOnlySpan<char> str2, ReadOnlySpan<char> str3);
public static string Concat (ReadOnlySpan<char> str0, ReadOnlySpan<char> str1, ReadOnlySpan<char> str2, ReadOnlySpan<char> str3);
static member Concat : ReadOnlySpan<char> * ReadOnlySpan<char> * ReadOnlySpan<char> * ReadOnlySpan<char> -> string
Public Shared Function Concat (str0 As ReadOnlySpan(Of Char), str1 As ReadOnlySpan(Of Char), str2 As ReadOnlySpan(Of Char), str3 As ReadOnlySpan(Of Char)) As String

Parameter

Gibt zurück

Concat(Object, Object, Object, Object) Concat(Object, Object, Object, Object) Concat(Object, Object, Object, Object) Concat(Object, Object, Object, Object)

Wichtig

Diese API ist nicht CLS-kompatibel.

Verkettet die Zeichenfolgenentsprechungen von vier angegebenen Objekten sowie aller in einer optionalen Parameterliste variabler Länger angegebenen Objekte.Concatenates the string representations of four specified objects and any objects specified in an optional variable length parameter list.

public:
 static System::String ^ Concat(System::Object ^ arg0, System::Object ^ arg1, System::Object ^ arg2, System::Object ^ arg3);
[System.CLSCompliant(false)]
public static string Concat (object arg0, object arg1, object arg2, object arg3);
static member Concat : obj * obj * obj * obj -> string
Public Shared Function Concat (arg0 As Object, arg1 As Object, arg2 As Object, arg3 As Object) As String

Parameter

arg0
Object Object Object Object

Das erste zu verkettende Objekt.The first object to concatenate.

arg1
Object Object Object Object

Das zweite zu verkettende Objekt.The second object to concatenate.

arg2
Object Object Object Object

Das dritte zu verkettende Objekt.The third object to concatenate.

arg3
Object Object Object Object

Das vierte zu verkettende Objekt.The fourth object to concatenate.

Gibt zurück

Die verkettete Zeichenfolgendarstellung aller Werte in der Parameterliste.The concatenated string representation of each value in the parameter list.

Beispiele

Das folgende Beispiel veranschaulicht die Verwendung der Concat(Object, Object, Object, Object) Methode, um eine Liste der Variablenparameter verketten.The following example illustrates the use of the Concat(Object, Object, Object, Object) method to concatenate a list of variable parameters. In diesem Fall wird die Methode mit neun Parametern aufgerufen.In this case, the method is called with nine parameters.

using System;
using System.Collections;

public class Example
{
   public static void Main()
   {
      const int WORD_SIZE = 4;
      
      // Define some 4-letter words to be scrambled.
      string[] words = { "home", "food", "game", "rest" };
      // Define two arrays equal to the number of letters in each word.
      double[] keys = new double[WORD_SIZE];
      string[] letters = new string[WORD_SIZE];
      // Initialize the random number generator.
      Random rnd = new Random();
      
      // Scramble each word.
      foreach (string word in words)
      {
         for (int ctr = 0; ctr < word.Length; ctr++)
         {
            // Populate the array of keys with random numbers.
            keys[ctr] = rnd.NextDouble();
            // Assign a letter to the array of letters.
            letters[ctr] = word[ctr].ToString();
         }   
         // Sort the array. 
         Array.Sort(keys, letters, 0, WORD_SIZE, Comparer.Default);      
         // Display the scrambled word.
         string scrambledWord = String.Concat(letters[0], letters[1], 
                                              letters[2], letters[3]);
         Console.WriteLine("{0} --> {1}", word, scrambledWord);
      } 
   }
}
// The example displays output like the following:
//       home --> mheo
//       food --> oodf
//       game --> aemg
//       rest --> trse
Imports System.Collections

Module Example
   Public Sub Main()
      Const WORD_SIZE As Integer = 4
      
      ' Define some 4-letter words to be scrambled.
      Dim words() As String = { "home", "food", "game", "rest" }
      ' Define two arrays equal to the number of letters in each word.
      Dim keys(WORD_SIZE) As Double
      Dim letters(WORD_SIZE) As String
      ' Initialize the random number generator.
      Dim rnd As New Random()
      
      ' Scramble each word.
      For Each word As String In words
         For ctr As Integer = 0 To word.Length - 1
            ' Populate the array of keys with random numbers.
            keys(ctr) = rnd.NextDouble()
            ' Assign a letter to the array of letters.
            letters(ctr) = word.Chars(ctr)
         Next   
         ' Sort the array. 
         Array.Sort(keys, letters, 0, WORD_SIZE, Comparer.Default)      
         ' Display the scrambled word.
         Dim scrambledWord As String = String.Concat(letters(0), letters(1), _
                                                     letters(2), letters(3))
         Console.WriteLine("{0} --> {1}", word, scrambledWord)
      Next 
   End Sub
End Module 
' The example displays output like the following:
'       home --> mheo
'       food --> oodf
'       game --> aemg
'       rest --> trse

Hinweise

Hinweis

Diese API ist nicht CLS-kompatibel.This API is not CLS-compliant. Die CLS-kompatible Alternative ist String.Concat(Object[]).The CLS-compliant alternative is String.Concat(Object[]). Die C#- und Visual Basic-Compiler lösen einen Aufruf dieser Methode automatisch als Aufruf an String.Concat(Object[]).The C# and Visual Basic compilers automatically resolve a call to this method as a call to String.Concat(Object[]).

Verkettet die Methode jedes Objekt in der Liste durch Aufrufen der parameterlosen ToString Methode; sie werden keine Trennzeichen hinzugefügt.The method concatenates each object in the parameter list by calling its parameterless ToString method; it does not add any delimiters.

String.Empty wird anstelle von null-Argumenten verwendet.String.Empty is used in place of any null argument.

Hinweis

Der letzte Parameter von der Concat Methode ist eine optionale durch Trennzeichen getrennte Liste von einem oder mehreren zusätzlichen Objekten zu verketten.The last parameter of the Concat method is an optional comma-delimited list of one or more additional objects to concatenate.

Hinweise für Aufrufer

Diese Methode ist mit markiert die vararg -Schlüsselwort, das bedeutet, dass es sich um eine Variable Anzahl an Parametern unterstützt.This method is marked with the vararg keyword, which means that it supports a variable number of parameters. Die Methode kann aufgerufen werden, von Visual C++, aber es kann nicht in c# oder Visual Basic-Code aufgerufen werden.The method can be called from Visual C++, but it cannot be called from C# or Visual Basic code. Die C#- und Visual Basic-Compiler lösen Aufrufe von Concat(Object, Object, Object, Object) als Aufrufe von Concat(Object[]).The C# and Visual Basic compilers resolve calls to Concat(Object, Object, Object, Object) as calls to Concat(Object[]).

Concat(String, String, String) Concat(String, String, String) Concat(String, String, String) Concat(String, String, String)

Verkettet zwei angegebene Instanzen von String.Concatenates three specified instances of String.

public:
 static System::String ^ Concat(System::String ^ str0, System::String ^ str1, System::String ^ str2);
public static string Concat (string str0, string str1, string str2);
static member Concat : string * string * string -> string
Public Shared Function Concat (str0 As String, str1 As String, str2 As String) As String

Parameter

str0
String String String String

Die erste zu verkettende Zeichenfolge.The first string to concatenate.

str1
String String String String

Die zweite zu verkettende Zeichenfolge.The second string to concatenate.

str2
String String String String

Die dritte zu verkettende Zeichenfolge.The third string to concatenate.

Gibt zurück

Die Verkettung von str0, str1 und str2.The concatenation of str0, str1, and str2.

Beispiele

Im folgenden Beispiel wird die Concat Methode zum Verketten von drei Zeichenfolgen und das Ergebnis wird angezeigt.The following example uses the Concat method to concatenate three strings and displays the result.

using namespace System;

void main()
{
   String^ s1 = "We went to a bookstore, ";
   String^ s2 = "a movie, ";
   String^ s3 = "and a restaurant.";

   String^ s = String::Concat(s1, s2, s3);
   Console::WriteLine(s);
}
// The example displays the following output:
//      We went to a bookstore, a movie, and a restaurant. 
using System;

public class Example
{
   public static void Main()
   {
      String s1 = "We went to a bookstore, ";
      String s2 = "a movie, ";
      String s3 = "and a restaurant.";

      var s = String.Concat(s1, s2, s3);
      Console.WriteLine(s);
   }
}
// The example displays the following output:
//      We went to a bookstore, a movie, and a restaurant. 
Imports System

Public Module Example
   Public Sub Main()
      Dim s1 As String = "We went to a bookstore, "
      Dim s2 As String = "a movie, "
      Dim s3 As String = "and a restaurant."

      Dim s = String.Concat(s1, s2, s3)
      Console.WriteLine(s)
   End Sub
End Module
' The example displays the following output:
'      We went to a bookstore, a movie, and a restaurant. 

Hinweise

Die Methode verkettet str0, str1, und str2; es werden Trennzeichen nicht hinzugefügt.The method concatenates str0, str1, and str2; it does not add any delimiters.

Siehe auch

Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>)

public:
 static System::String ^ Concat(ReadOnlySpan<char> str0, ReadOnlySpan<char> str1, ReadOnlySpan<char> str2);
public static string Concat (ReadOnlySpan<char> str0, ReadOnlySpan<char> str1, ReadOnlySpan<char> str2);
static member Concat : ReadOnlySpan<char> * ReadOnlySpan<char> * ReadOnlySpan<char> -> string
Public Shared Function Concat (str0 As ReadOnlySpan(Of Char), str1 As ReadOnlySpan(Of Char), str2 As ReadOnlySpan(Of Char)) As String

Parameter

Gibt zurück

Concat(Object, Object, Object) Concat(Object, Object, Object) Concat(Object, Object, Object) Concat(Object, Object, Object)

Verkettet die Zeichenfolgendarstellungen von drei angegebenen Objekten.Concatenates the string representations of three specified objects.

public:
 static System::String ^ Concat(System::Object ^ arg0, System::Object ^ arg1, System::Object ^ arg2);
public static string Concat (object arg0, object arg1, object arg2);
static member Concat : obj * obj * obj -> string
Public Shared Function Concat (arg0 As Object, arg1 As Object, arg2 As Object) As String

Parameter

arg0
Object Object Object Object

Das erste zu verkettende Objekt.The first object to concatenate.

arg1
Object Object Object Object

Das zweite zu verkettende Objekt.The second object to concatenate.

arg2
Object Object Object Object

Das dritte zu verkettende Objekt.The third object to concatenate.

Gibt zurück

Die verketteten Zeichenfolgendarstellungen der Werte von arg0, arg1 und arg2.The concatenated string representations of the values of arg0, arg1, and arg2.

Beispiele

Das folgende Beispiel veranschaulicht die Concat Methode.The following example demonstrates the Concat method.

using namespace System;

int main()
{
   int i = -123;
   Object^ o = i;
   array<Object^>^objs = { -123, -456, -789};
   Console::WriteLine("Concatenate 1, 2, and 3 objects:");
   Console::WriteLine("1) {0}", String::Concat(o));
   Console::WriteLine("2) {0}", String::Concat(o, o));
   Console::WriteLine("3) {0}", String::Concat(o, o, o));
   
   Console::WriteLine("\nConcatenate 4 objects and a variable length parameter list:" );
   Console::WriteLine("4) {0}", String::Concat(o, o, o, o));
   Console::WriteLine("5) {0}", String::Concat( o, o, o, o, o));
   Console::WriteLine("\nConcatenate a 3-element object array:");
   Console::WriteLine("6) {0}", String::Concat(objs));
}
// The example displays the following output:
//    Concatenate 1, 2, and 3 objects:
//    1) -123
//    2) -123-123
//    3) -123-123-123
//    
//    Concatenate 4 objects and a variable length parameter list:
//    4) -123-123-123-123
//    5) -123-123-123-123-123
//    
//    Concatenate a 3-element object array:
//    6) -123-456-789
using System;

class stringConcat5 {
    public static void Main() {
    int i = -123;
    Object o = i;
    Object[] objs = new Object[] {-123, -456, -789};

    Console.WriteLine("Concatenate 1, 2, and 3 objects:");
    Console.WriteLine("1) {0}", String.Concat(o));
    Console.WriteLine("2) {0}", String.Concat(o, o));
    Console.WriteLine("3) {0}", String.Concat(o, o, o));

    Console.WriteLine("\nConcatenate 4 objects and a variable length parameter list:");
    Console.WriteLine("4) {0}", String.Concat(o, o, o, o));
    Console.WriteLine("5) {0}", String.Concat(o, o, o, o, o));

    Console.WriteLine("\nConcatenate a 3-element object array:");
    Console.WriteLine("6) {0}", String.Concat(objs));
    }
}
// The example displays the following output:
//    Concatenate 1, 2, and 3 objects:
//    1) -123
//    2) -123-123
//    3) -123-123-123
//    
//    Concatenate 4 objects and a variable length parameter list:
//    4) -123-123-123-123
//    5) -123-123-123-123-123
//    
//    Concatenate a 3-element object array:
//    6) -123-456-789
Class stringConcat5
   Public Shared Sub Main()
      Dim i As Integer = - 123
      Dim o As [Object] = i
      Dim objs() As [Object] = {-123, -456, -789}
      
      Console.WriteLine("Concatenate 1, 2, and 3 objects:")
      Console.WriteLine("1) {0}", [String].Concat(o))
      Console.WriteLine("2) {0}", [String].Concat(o, o))
      Console.WriteLine("3) {0}", [String].Concat(o, o, o))
      
      Console.WriteLine(vbCrLf & "Concatenate 4 objects and a variable length parameter list:")
      Console.WriteLine("4) {0}", String.Concat(o, o, o, o))
      Console.WriteLine("5) {0}", String.Concat(o, o, o, o, o))
      
      Console.WriteLine(vbCrLf & "Concatenate a 3-element object array:")
      Console.WriteLine("6) {0}", [String].Concat(objs))
   End Sub
End Class
'The example displays the following output:
'    Concatenate 1, 2, and 3 objects:
'    1) -123
'    2) -123-123
'    3) -123-123-123
'    
'    Concatenate 4 objects and a variable length parameter list:
'    4) -123-123-123-123
'    5) -123-123-123-123-123
'         
'    Concatenate a 3-element object array:
'    6) -123-456-789

Hinweise

Die Methode verkettet arg0, arg1, und arg2 durch Aufrufen der parameterlosen ToString -Methode aller Objekte; es werden Trennzeichen nicht hinzugefügt.The method concatenates arg0, arg1, and arg2 by calling the parameterless ToString method of each object; it does not add any delimiters.

String.Empty wird anstelle von null-Argumenten verwendet.String.Empty is used in place of any null argument.

Siehe auch

Concat(Object, Object) Concat(Object, Object) Concat(Object, Object) Concat(Object, Object)

Verkettet die Zeichenfolgendarstellungen zweier angegebener Objekte.Concatenates the string representations of two specified objects.

public:
 static System::String ^ Concat(System::Object ^ arg0, System::Object ^ arg1);
public static string Concat (object arg0, object arg1);
static member Concat : obj * obj -> string
Public Shared Function Concat (arg0 As Object, arg1 As Object) As String

Parameter

arg0
Object Object Object Object

Das erste zu verkettende Objekt.The first object to concatenate.

arg1
Object Object Object Object

Das zweite zu verkettende Objekt.The second object to concatenate.

Gibt zurück

Die verketteten Zeichenfolgendarstellungen der Werte von arg0 und arg1.The concatenated string representations of the values of arg0 and arg1.

Beispiele

Das folgende Beispiel veranschaulicht die Concat Methode.The following example demonstrates the Concat method.

using namespace System;

int main()
{
   int i = -123;
   Object^ o = i;
   array<Object^>^objs = { -123, -456, -789};
   Console::WriteLine("Concatenate 1, 2, and 3 objects:");
   Console::WriteLine("1) {0}", String::Concat(o));
   Console::WriteLine("2) {0}", String::Concat(o, o));
   Console::WriteLine("3) {0}", String::Concat(o, o, o));
   
   Console::WriteLine("\nConcatenate 4 objects and a variable length parameter list:" );
   Console::WriteLine("4) {0}", String::Concat(o, o, o, o));
   Console::WriteLine("5) {0}", String::Concat( o, o, o, o, o));
   Console::WriteLine("\nConcatenate a 3-element object array:");
   Console::WriteLine("6) {0}", String::Concat(objs));
}
// The example displays the following output:
//    Concatenate 1, 2, and 3 objects:
//    1) -123
//    2) -123-123
//    3) -123-123-123
//    
//    Concatenate 4 objects and a variable length parameter list:
//    4) -123-123-123-123
//    5) -123-123-123-123-123
//    
//    Concatenate a 3-element object array:
//    6) -123-456-789
using System;

class stringConcat5 {
    public static void Main() {
    int i = -123;
    Object o = i;
    Object[] objs = new Object[] {-123, -456, -789};

    Console.WriteLine("Concatenate 1, 2, and 3 objects:");
    Console.WriteLine("1) {0}", String.Concat(o));
    Console.WriteLine("2) {0}", String.Concat(o, o));
    Console.WriteLine("3) {0}", String.Concat(o, o, o));

    Console.WriteLine("\nConcatenate 4 objects and a variable length parameter list:");
    Console.WriteLine("4) {0}", String.Concat(o, o, o, o));
    Console.WriteLine("5) {0}", String.Concat(o, o, o, o, o));

    Console.WriteLine("\nConcatenate a 3-element object array:");
    Console.WriteLine("6) {0}", String.Concat(objs));
    }
}
// The example displays the following output:
//    Concatenate 1, 2, and 3 objects:
//    1) -123
//    2) -123-123
//    3) -123-123-123
//    
//    Concatenate 4 objects and a variable length parameter list:
//    4) -123-123-123-123
//    5) -123-123-123-123-123
//    
//    Concatenate a 3-element object array:
//    6) -123-456-789
Class stringConcat5
   Public Shared Sub Main()
      Dim i As Integer = - 123
      Dim o As [Object] = i
      Dim objs() As [Object] = {-123, -456, -789}
      
      Console.WriteLine("Concatenate 1, 2, and 3 objects:")
      Console.WriteLine("1) {0}", [String].Concat(o))
      Console.WriteLine("2) {0}", [String].Concat(o, o))
      Console.WriteLine("3) {0}", [String].Concat(o, o, o))
      
      Console.WriteLine(vbCrLf & "Concatenate 4 objects and a variable length parameter list:")
      Console.WriteLine("4) {0}", String.Concat(o, o, o, o))
      Console.WriteLine("5) {0}", String.Concat(o, o, o, o, o))
      
      Console.WriteLine(vbCrLf & "Concatenate a 3-element object array:")
      Console.WriteLine("6) {0}", [String].Concat(objs))
   End Sub
End Class
'The example displays the following output:
'    Concatenate 1, 2, and 3 objects:
'    1) -123
'    2) -123-123
'    3) -123-123-123
'    
'    Concatenate 4 objects and a variable length parameter list:
'    4) -123-123-123-123
'    5) -123-123-123-123-123
'         
'    Concatenate a 3-element object array:
'    6) -123-456-789

Hinweise

Die Methode verkettet arg0 und arg1 durch Aufrufen der parameterlosen ToString -Methode der arg0 und arg1; es werden Trennzeichen nicht hinzugefügt.The method concatenates arg0 and arg1 by calling the parameterless ToString method of arg0 and arg1; it does not add any delimiters.

String.Empty wird anstelle von null-Argumenten verwendet.String.Empty is used in place of any null argument.

Wenn entweder der Argumente der Verweis auf ein Array ist, verkettet die Methode eine Zeichenfolge, die dieses Arrays, anstatt ihre Mitglieder (z. B. "System.String[]").If either of the arguments is an array reference, the method concatenates a string representing that array, instead of its members (for example, "System.String[]").

Siehe auch

Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>) Concat(ReadOnlySpan<Char>, ReadOnlySpan<Char>)

public:
 static System::String ^ Concat(ReadOnlySpan<char> str0, ReadOnlySpan<char> str1);
public static string Concat (ReadOnlySpan<char> str0, ReadOnlySpan<char> str1);
static member Concat : ReadOnlySpan<char> * ReadOnlySpan<char> -> string
Public Shared Function Concat (str0 As ReadOnlySpan(Of Char), str1 As ReadOnlySpan(Of Char)) As String

Parameter

Gibt zurück

Concat(String[]) Concat(String[]) Concat(String[]) Concat(String[])

Wichtig

Diese API ist nicht CLS-kompatibel.

Verkettet die Elemente eines angegebenen String-Arrays.Concatenates the elements of a specified String array.

public:
 static System::String ^ Concat(... cli::array <System::String ^> ^ values);
[System.CLSCompliant(false)]
public static string Concat (params string[] values);
static member Concat : string[] -> string
Public Shared Function Concat (ParamArray values As String()) As String

Parameter

values
String[]

Ein Array von Zeichenfolgeninstanzen.An array of string instances.

Gibt zurück

Die verketteten Elemente von values.The concatenated elements of values.

Ausnahmen

Beispiele

Das folgende Beispiel zeigt die Verwendung der Concat -Methode mit einer String Array.The following example demonstrates the use of the Concat method with a String array.

using namespace System;

int main()
{
   
   // Make an array of strings. Note that we have included spaces.
   array<String^>^s = { "hello ", "and ", "welcome ", "to ",
                        "this ", "demo! "};
   
   // Put all the strings together.
   Console::WriteLine( String::Concat(s) );
   
   // Sort the strings, and put them together.
   Array::Sort( s );
   Console::WriteLine( String::Concat(s));
}
// The example displays the following output:
//       hello and welcome to this demo!
//       and demo! hello this to welcome
using System;

public class Example
{
    public static void Main()
    {
        // Make an array of strings. Note that we have included spaces.
        string [] s = { "hello ", "and ", "welcome ", "to ",
                        "this ", "demo! " };

        // Put all the strings together.
        Console.WriteLine(string.Concat(s));

        // Sort the strings, and put them together.
        Array.Sort(s);
        Console.WriteLine(string.Concat(s));
    }
}
// The example displays the following output:
//       hello and welcome to this demo!
//       and demo! hello this to welcome
Public Class Example
    Public Shared Sub Main()
        ' Make an array of strings. Note that we have included spaces.
        Dim s As String() = { "hello ", "and ", "welcome ", "to ",
                              "this ", "demo! "}

        ' Put all the strings together.
        Console.WriteLine(String.Concat(s))
        
        ' Sort the strings, and put them together.
        Array.Sort(s)
        Console.WriteLine(String.Concat(s))
    End Sub
End Class
' The example displays the following output:
'       hello and welcome to this demo!
'       and demo! hello this to welcome

Hinweise

Die Methode verkettet, jedes Objekt in values; es werden Trennzeichen nicht hinzugefügt.The method concatenates each object in values; it does not add any delimiters.

Ein Empty Zeichenfolge anstelle eines null-Objekts im Array verwendet wird.An Empty string is used in place of any null object in the array.

Siehe auch

Concat(Object[]) Concat(Object[]) Concat(Object[]) Concat(Object[])

Verkettet die Zeichenfolgendarstellungen der Elemente in einem angegebenen Object-Array.Concatenates the string representations of the elements in a specified Object array.

public:
 static System::String ^ Concat(... cli::array <System::Object ^> ^ args);
public static string Concat (params object[] args);
static member Concat : obj[] -> string
Public Shared Function Concat (ParamArray args As Object()) As String

Parameter

args
Object[]

Ein Objektarray, das die zu verkettenden Elemente enthält.An object array that contains the elements to concatenate.

Gibt zurück

Die verketteten Zeichenfolgendarstellungen der Werte der Elemente in args.The concatenated string representations of the values of the elements in args.

Ausnahmen

Beispiele

Das folgende Beispiel zeigt die Verwendung der Concat -Methode mit einer Object Array.The following example demonstrates the use of the Concat method with an Object array.

using System;

public class ConcatTest {
    public static void Main() {
        // Create a group of objects.
        Test1 t1 = new Test1();
        Test2 t2 = new Test2();
        int i = 16;
        string s = "Demonstration";

        // Place the objects in an array.
        object [] o = { t1, i, t2, s };

        // Concatenate the objects together as a string. To do this,
        // the ToString method of each of the objects is called.
        Console.WriteLine(string.Concat(o));
    }
}

// Create two empty test classes.
class Test1 {
}

class Test2 {
}
// The example displays the following output:
//       Test116Test2Demonstration
Imports System



Public Class ConcatTest
    
    Public Shared Sub Main()
        Dim t1 As New Test1()
        Dim t2 As New Test2()
        Dim i As Integer = 16
        Dim s As String = "Demonstration"
        Dim o As Object() = {t1, i, t2, s}
        
        ' create a group of objects
        
        ' place the objects in an array
        
        ' concatenate the objects together as a string. To do this,
        ' the ToString method in the objects is called
        Console.WriteLine(String.Concat(o))
    End Sub 'Main
End Class 'ConcatTest


' imagine these test classes are full-fledged objects...
Class Test1
End Class 'Test1

Class Test2
End Class 'Test2

Hinweise

Die Methode verkettet, jedes Objekt in args durch Aufrufen der parameterlosen ToString Methode dieses Objekts; es werden Trennzeichen nicht hinzugefügt.The method concatenates each object in args by calling the parameterless ToString method of that object; it does not add any delimiters.

String.Empty wird anstelle eines null-Objekts im Array verwendet.String.Empty is used in place of any null object in the array.

Hinweise für Aufrufer

Diese Methode wird von C++-Code nicht aufgerufen.This method is not called by C++ code. Der C++-Compiler löst Aufrufe von Concat deren vier oder mehr Objektparameter als Aufruf an Concat(Object, Object, Object, Object).The C++ compiler resolves calls to Concat that have four or more object parameters as a call to Concat(Object, Object, Object, Object).

Siehe auch

Concat(Object) Concat(Object) Concat(Object) Concat(Object)

Erstellt die Zeichenfolgendarstellung eines angegebenen Objekts.Creates the string representation of a specified object.

public:
 static System::String ^ Concat(System::Object ^ arg0);
public static string Concat (object arg0);
static member Concat : obj -> string
Public Shared Function Concat (arg0 As Object) As String

Parameter

arg0
Object Object Object Object

Das darzustellende Objekt oder null.The object to represent, or null.

Gibt zurück

Die Zeichenfolgendarstellung des Werts von arg0 oder Empty, wenn arg0 null ist.The string representation of the value of arg0, or Empty if arg0 is null.

Beispiele

Das folgende Beispiel veranschaulicht die Concat Methode.The following example demonstrates the Concat method.

using namespace System;

int main()
{
   int i = -123;
   Object^ o = i;
   array<Object^>^objs = { -123, -456, -789};
   Console::WriteLine("Concatenate 1, 2, and 3 objects:");
   Console::WriteLine("1) {0}", String::Concat(o));
   Console::WriteLine("2) {0}", String::Concat(o, o));
   Console::WriteLine("3) {0}", String::Concat(o, o, o));
   
   Console::WriteLine("\nConcatenate 4 objects and a variable length parameter list:" );
   Console::WriteLine("4) {0}", String::Concat(o, o, o, o));
   Console::WriteLine("5) {0}", String::Concat( o, o, o, o, o));
   Console::WriteLine("\nConcatenate a 3-element object array:");
   Console::WriteLine("6) {0}", String::Concat(objs));
}
// The example displays the following output:
//    Concatenate 1, 2, and 3 objects:
//    1) -123
//    2) -123-123
//    3) -123-123-123
//    
//    Concatenate 4 objects and a variable length parameter list:
//    4) -123-123-123-123
//    5) -123-123-123-123-123
//    
//    Concatenate a 3-element object array:
//    6) -123-456-789
using System;

class stringConcat5 {
    public static void Main() {
    int i = -123;
    Object o = i;
    Object[] objs = new Object[] {-123, -456, -789};

    Console.WriteLine("Concatenate 1, 2, and 3 objects:");
    Console.WriteLine("1) {0}", String.Concat(o));
    Console.WriteLine("2) {0}", String.Concat(o, o));
    Console.WriteLine("3) {0}", String.Concat(o, o, o));

    Console.WriteLine("\nConcatenate 4 objects and a variable length parameter list:");
    Console.WriteLine("4) {0}", String.Concat(o, o, o, o));
    Console.WriteLine("5) {0}", String.Concat(o, o, o, o, o));

    Console.WriteLine("\nConcatenate a 3-element object array:");
    Console.WriteLine("6) {0}", String.Concat(objs));
    }
}
// The example displays the following output:
//    Concatenate 1, 2, and 3 objects:
//    1) -123
//    2) -123-123
//    3) -123-123-123
//    
//    Concatenate 4 objects and a variable length parameter list:
//    4) -123-123-123-123
//    5) -123-123-123-123-123
//    
//    Concatenate a 3-element object array:
//    6) -123-456-789
Class stringConcat5
   Public Shared Sub Main()
      Dim i As Integer = - 123
      Dim o As [Object] = i
      Dim objs() As [Object] = {-123, -456, -789}
      
      Console.WriteLine("Concatenate 1, 2, and 3 objects:")
      Console.WriteLine("1) {0}", [String].Concat(o))
      Console.WriteLine("2) {0}", [String].Concat(o, o))
      Console.WriteLine("3) {0}", [String].Concat(o, o, o))
      
      Console.WriteLine(vbCrLf & "Concatenate 4 objects and a variable length parameter list:")
      Console.WriteLine("4) {0}", String.Concat(o, o, o, o))
      Console.WriteLine("5) {0}", String.Concat(o, o, o, o, o))
      
      Console.WriteLine(vbCrLf & "Concatenate a 3-element object array:")
      Console.WriteLine("6) {0}", [String].Concat(objs))
   End Sub
End Class
'The example displays the following output:
'    Concatenate 1, 2, and 3 objects:
'    1) -123
'    2) -123-123
'    3) -123-123-123
'    
'    Concatenate 4 objects and a variable length parameter list:
'    4) -123-123-123-123
'    5) -123-123-123-123-123
'         
'    Concatenate a 3-element object array:
'    6) -123-456-789

Hinweise

Die Concat(Object) Methode stellt arg0 als Zeichenfolge durch Aufrufen der parameterlosen ToString Methode.The Concat(Object) method represents arg0 as a string by calling its parameterless ToString method.

Siehe auch

Concat(IEnumerable<String>) Concat(IEnumerable<String>) Concat(IEnumerable<String>) Concat(IEnumerable<String>)

Verkettet die Member einer erstellten IEnumerable<T>-Auflistung vom Typ String.Concatenates the members of a constructed IEnumerable<T> collection of type String.

public:
 static System::String ^ Concat(System::Collections::Generic::IEnumerable<System::String ^> ^ values);
[System.Runtime.InteropServices.ComVisible(false)]
public static string Concat (System.Collections.Generic.IEnumerable<string> values);
static member Concat : seq<string> -> string
Public Shared Function Concat (values As IEnumerable(Of String)) As String

Parameter

values
IEnumerable<String>

Ein Auflistungsobjekt, das IEnumerable<T> implementiert und dessen generisches Typargument String ist.A collection object that implements IEnumerable<T> and whose generic type argument is String.

Gibt zurück

Die verketteten Zeichenfolgen in values oder Empty, wenn values ein leeres IEnumerable(Of String) ist.The concatenated strings in values, or Empty if values is an empty IEnumerable(Of String).

Ausnahmen

Beispiele

Im folgenden Beispiel wird den Algorithmus Sieb des Eratosthenes zum Berechnen von Primzahlen, die kleiner als oder gleich 100 sind.The following example uses the Sieve of Eratosthenes algorithm to calculate the prime numbers that are less than or equal to 100. Weist das Ergebnis an eine List<T> Objekt vom Typ String, die es dann an übergibt die Concat(IEnumerable<String>) Methode.It assigns the result to a List<T> object of type String, which it then passes to the Concat(IEnumerable<String>) method.

using System;
using System.Collections.Generic;

public class Example
{
   public static void Main()
   {
      int maxPrime = 100;
      IEnumerable<String> primeList = GetPrimes(maxPrime);
      Console.WriteLine("Primes less than {0}:", maxPrime);
      Console.WriteLine("   {0}", String.Concat(primeList));
   }

   private static IEnumerable<String> GetPrimes(int maxPrime)
   {
      Array values = Array.CreateInstance(typeof(int), 
                              new int[] { maxPrime - 1}, new int[] { 2 }); 
      // Use Sieve of Erathsthenes to determine prime numbers.
      for (int ctr = values.GetLowerBound(0); ctr <= (int) Math.Ceiling(Math.Sqrt(values.GetUpperBound(0))); ctr++)
      {
                           
         if ((int) values.GetValue(ctr) == 1) continue;
         
         for (int multiplier = ctr; multiplier <=  maxPrime / 2; multiplier++)
            if (ctr * multiplier <= maxPrime)
               values.SetValue(1, ctr * multiplier);
      }      
      
      List<String> primes = new List<String>();
      for (int ctr = values.GetLowerBound(0); ctr <= values.GetUpperBound(0); ctr++)
         if ((int) values.GetValue(ctr) == 0) 
            primes.Add(ctr.ToString() + " ");
      return primes;
   }   
}
// The example displays the following output:
//    Primes less than 100:
//       2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
Imports System.Collections.Generic

Module Example
   Public Sub Main()
      Dim maxPrime As Integer = 100
      Dim primeList As IEnumerable(Of String) = GetPrimes(maxPrime)
      Console.WriteLine("Primes less than {0}:", maxPrime)
      Console.WriteLine("   {0}", String.Concat(primeList))
   End Sub
   
   Private Function GetPrimes(maxPrime As Integer) As IEnumerable(Of String)
      Dim values As Array = Array.CreateInstance(GetType(Integer), _
                              New Integer() { maxPrime - 1}, New Integer(){ 2 }) 
      ' Use Sieve of Erathsthenes to determine prime numbers.
      For ctr As Integer = values.GetLowerBound(0) To _
                           CInt(Math.Ceiling(Math.Sqrt(values.GetUpperBound(0))))
         If CInt(values.GetValue(ctr)) = 1 Then Continue For
         
         For multiplier As Integer = ctr To maxPrime \ 2
            If ctr * multiplier <= maxPrime Then values.SetValue(1, ctr * multiplier)
         Next   
      Next      
      
      Dim primes As New List(Of String)
      For ctr As Integer = values.GetLowerBound(0) To values.GetUpperBound(0)
         If CInt(values.GetValue(ctr)) = 0 Then primes.Add(ctr.ToString() + " ")
      Next            
      Return primes
   End Function   
End Module
' The example displays the following output:
'    Primes less than 100:
'       2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97

Hinweise

Die Methode verkettet, jedes Objekt in values; es werden Trennzeichen nicht hinzugefügt.The method concatenates each object in values; it does not add any delimiters. Ein Trennzeichen zwischen den einzelnen Elementen an values, rufen Sie die Join(String, IEnumerable<String>) Methode.To specify a delimiter between each member of values, call the Join(String, IEnumerable<String>) method.

Ein Empty diese Zeichenfolge wird verwendet, statt alle null-Element im values.An Empty string is used in place of any null element in values.

Wenn values ein leeres IEnumerable(Of String)ist, gibt die Methode String.Emptyzurückgegeben.If values is an empty IEnumerable(Of String), the method returns String.Empty. Wenn values ist null, löst die Methode eine ArgumentNullException Ausnahme.If values is null, the method throws an ArgumentNullException exception.

Concat(IEnumerable<String>) ist eine bequeme Methode, mit dem Sie verketten, jedes Element in einer IEnumerable(Of String) Auflistung ohne Elemente zunächst in ein Zeichenfolgenarray konvertiert.Concat(IEnumerable<String>) is a convenience method that lets you concatenate each element in an IEnumerable(Of String) collection without first converting the elements to a string array. Es ist besonders nützlich bei Abfrageausdrücken Language-Integrated Query (LINQ).It is particularly useful with Language-Integrated Query (LINQ) query expressions. Das folgende Beispiel übergibt eine List(Of String) Objekt, das die Groß- oder Kleinbuchstaben Buchstaben des Alphabets, einen Lambda-Ausdruck, die Buchstaben, die gleich oder größer als einen bestimmten Buchstaben enthält auswählt (die im Beispiel "M" ist).The following example passes a List(Of String) object that contains either the uppercase or lowercase letters of the alphabet to a lambda expression that selects letters that are equal to or greater than a particular letter (which, in the example, is "M"). Die IEnumerable(Of String) -Auflistung, die von zurückgegeben wird die Enumerable.Where Methode übergeben wird, um die Concat(IEnumerable<String>) Methode, um das Ergebnis als eine einzelne Zeichenfolge anzuzeigen.The IEnumerable(Of String) collection that is returned by the Enumerable.Where method is passed to the Concat(IEnumerable<String>) method to display the result as a single string.

using System;
using System.Collections.Generic;
using System.Linq;

public class Example
{
   public static void Main()
   {
      string output = String.Concat( GetAlphabet(true).Where( letter => 
                      letter.CompareTo("M") >= 0));
      Console.WriteLine(output);  
   }

   private static List<string> GetAlphabet(bool upper)
   {
      List<string> alphabet = new List<string>();
      int charValue = upper ? 65 : 97;
      for (int ctr = 0; ctr <= 25; ctr++)
         alphabet.Add(Convert.ToChar(charValue + ctr).ToString());
      return alphabet; 
   }
}
// The example displays the following output:
//      MNOPQRSTUVWXYZ
Imports System.Collections.Generic
Imports System.Linq

Module modMain
   Public Sub Main()
      Dim output As String = String.Concat(GetAlphabet(true).Where(Function(letter) _
                                                         letter >= "M"))
        
      Console.WriteLine(output)                                     
   End Sub
   
   Private Function GetAlphabet(upper As Boolean) As List(Of String)
      Dim alphabet As New List(Of String)
      Dim charValue As Integer = CInt(IIf(upper, 65, 97))
      For ctr As Integer = 0 To 25
         alphabet.Add(ChrW(charValue + ctr).ToString())
      Next
      Return alphabet 
   End Function
End Module
' The example displays the following output:
'       MNOPQRSTUVWXYZ

Concat(String, String) Concat(String, String) Concat(String, String) Concat(String, String)

Verkettet zwei angegebene Instanzen von String.Concatenates two specified instances of String.

public:
 static System::String ^ Concat(System::String ^ str0, System::String ^ str1);
public static string Concat (string str0, string str1);
static member Concat : string * string -> string
Public Shared Function Concat (str0 As String, str1 As String) As String

Parameter

str0
String String String String

Die erste zu verkettende Zeichenfolge.The first string to concatenate.

str1
String String String String

Die zweite zu verkettende Zeichenfolge.The second string to concatenate.

Gibt zurück

Die Verkettung von str0 und str1.The concatenation of str0 and str1.

Beispiele

Das folgende Beispiel, verkettet den Namen einer Person vor-, zweit- und letzte.The following example concatenates a person's first, middle, and last name.

using namespace System;
int main()
{
   
   // we want to simply quickly add this person's name together
   String^ fName = "Simon";
   String^ mName = "Jake";
   String^ lName = "Harrows";
   
   // because we want a name to appear with a space in between each name, 
   // put a space on the front of the middle, and last name, allowing for
   // the fact that a space may already be there
   mName = String::Concat(  " ", mName->Trim() );
   lName = String::Concat(  " ", lName->Trim() );
   
   // this line simply concatenates the two strings
   Console::WriteLine( "Welcome to this page, '{0}'!", String::Concat( String::Concat( fName, mName ), lName ) );
}
// The example displays the following output:
//        Welcome to this page, 'Simon Jake Harrows'!
using System;

public class ConcatTest {
    public static void Main() {

        // we want to simply quickly add this person's name together
        string fName = "Simon";
        string mName = "Jake";
        string lName = "Harrows";

        // because we want a name to appear with a space in between each name, 
        // put a space on the front of the middle, and last name, allowing for
        // the fact that a space may already be there
        mName = " " + mName.Trim();
        lName = " " + lName.Trim();

        // this line simply concatenates the two strings
        Console.WriteLine("Welcome to this page, '{0}'!", string.Concat( string.Concat(fName, mName), lName ) );
    }
}
// The example displays the following output:
//        Welcome to this page, 'Simon Jake Harrows'!
Public Class ConcatTest
    Public Shared Sub Main()
        Dim fName As String = "Simon"
        Dim mName As String = "Jake"
        Dim lName As String = "Harrows"
        
        ' We want to simply quickly add this person's name together.
        ' Because we want a name to appear with a space in between each name, 
        ' we put a space on the front of the middle, and last name, allowing for
        ' the fact that a space may already be there.
        mName = " " + mName.Trim()
        lName = " " + lName.Trim()
        
        ' This line simply concatenates the two strings.
        Console.WriteLine("Welcome to this page, '{0}'!", _
                          String.Concat(String.Concat(fName, mName), lName))
    End Sub
End Class
' The example displays the following output:
'       Welcome to this page, 'Simon Jake Harrows'!

Hinweise

Die Methode verkettet str0 und str1; es werden Trennzeichen nicht hinzugefügt.The method concatenates str0 and str1; it does not add any delimiters.

Ein Empty diese Zeichenfolge wird anstelle von null-Argumenten verwendet.An Empty string is used in place of any null argument.

Siehe auch

Concat<T>(IEnumerable<T>) Concat<T>(IEnumerable<T>) Concat<T>(IEnumerable<T>) Concat<T>(IEnumerable<T>)

Verkettet die Member einer IEnumerable<T>-Implementierung.Concatenates the members of an IEnumerable<T> implementation.

public:
generic <typename T>
 static System::String ^ Concat(System::Collections::Generic::IEnumerable<T> ^ values);
[System.Runtime.InteropServices.ComVisible(false)]
public static string Concat<T> (System.Collections.Generic.IEnumerable<T> values);
static member Concat : seq<'T> -> string
Public Shared Function Concat(Of T) (values As IEnumerable(Of T)) As String

Typparameter

T

Der Typ der Member von values.The type of the members of values.

Parameter

values
IEnumerable<T> IEnumerable<T> IEnumerable<T> IEnumerable<T>

Ein Auflistungsobjekt, das die IEnumerable<T>-Schnittstelle implementiert.A collection object that implements the IEnumerable<T> interface.

Gibt zurück

Die verketteten Zeichenfolgen in values.The concatenated members in values.

Ausnahmen

Beispiele

Das folgende Beispiel definiert eine sehr einfache Animal Klasse enthält den Namen des Tieres und die Reihenfolge an, zu dem er gehört.The following example defines a very simple Animal class that contains the name of an animal and the order to which it belongs. Es definiert dann eine List<T> Objekt, das eine Reihe von enthalten Animal Objekte.It then defines a List<T> object to contain a number of Animal objects. Die Enumerable.Where Erweiterungsmethode aufgerufen, um das Extrahieren der Animal Objekte, deren Order -Eigenschaft gleich "Nagetier".The Enumerable.Where extension method is called to extract the Animal objects whose Order property equals "Rodent". Das Ergebnis wird zum Übergeben der Concat<T>(IEnumerable<T>) Methode und in der Konsole angezeigt.The result is passed to the Concat<T>(IEnumerable<T>) method and displayed to the console.

using System;
using System.Collections.Generic;
using System.Linq;

public class Animal
{
   public string Kind;
   public string Order;
   
   public Animal(string kind, string order)
   {
      this.Kind = kind;
      this.Order = order;
   }
   
   public override string ToString()
   {
      return this.Kind;
   }
}

public class Example
{
   public static void Main()
   {
      List<Animal> animals = new List<Animal>();
      animals.Add(new Animal("Squirrel", "Rodent"));
      animals.Add(new Animal("Gray Wolf", "Carnivora"));
      animals.Add(new Animal("Capybara", "Rodent"));
      string output = String.Concat(animals.Where( animal => 
                      (animal.Order == "Rodent")));
      Console.WriteLine(output);  
   }
}
// The example displays the following output:
//      SquirrelCapybara
Imports System.Collections.Generic

Public Class Animal
   Public Kind As String
   Public Order As String
   
   Public Sub New(kind As String, order As String)
      Me.Kind = kind
      Me.Order = order
   End Sub
   
   Public Overrides Function ToString() As String
      Return Me.Kind
   End Function
End Class

Module Example
   Public Sub Main()
      Dim animals As New List(Of Animal)
      animals.Add(New Animal("Squirrel", "Rodent"))
      animals.Add(New Animal("Gray Wolf", "Carnivora"))
      animals.Add(New Animal("Capybara", "Rodent")) 
      Dim output As String = String.Concat(animals.Where(Function(animal) _
                                           animal.Order = "Rodent"))
      Console.WriteLine(output)                                           
   End Sub
End Module
' The example displays the following output:
'      SquirrelCapybara

Hinweise

Die Methode verkettet, jedes Objekt in values; es werden Trennzeichen nicht hinzugefügt.The method concatenates each object in values; it does not add any delimiters.

Ein Empty diese Zeichenfolge wird anstelle von null-Argumenten verwendet.An Empty string is used in place of any null argument.

Concat<T>(IEnumerable<T>) ist eine bequeme Methode, mit dem Sie verketten, jedes Element in einer IEnumerable<T> Auflistung ohne Elemente zunächst in Zeichenfolgen konvertiert.Concat<T>(IEnumerable<T>) is a convenience method that lets you concatenate each element in an IEnumerable<T> collection without first converting the elements to strings. Es ist besonders nützlich bei Abfrageausdrücken Language-Integrated Query (LINQ), wie im Beispiel veranschaulicht.It is particularly useful with Language-Integrated Query (LINQ) query expressions, as the example illustrates. Die Zeichenfolgendarstellung der einzelnen Objekte in der IEnumerable<T> Auflistung wird durch Aufrufen des Objekts abgeleitet ToString Methode.The string representation of each object in the IEnumerable<T> collection is derived by calling that object's ToString method.

Gilt für: