List<T>.InsertRange(Int32, IEnumerable<T>) List<T>.InsertRange(Int32, IEnumerable<T>) List<T>.InsertRange(Int32, IEnumerable<T>) List<T>.InsertRange(Int32, IEnumerable<T>) Method

Definition

Fügt die Elemente einer Auflistung am angegebenen Index in die List<T> ein.Inserts the elements of a collection into the List<T> at the specified index.

public:
 void InsertRange(int index, System::Collections::Generic::IEnumerable<T> ^ collection);
public void InsertRange (int index, System.Collections.Generic.IEnumerable<T> collection);
member this.InsertRange : int * seq<'T> -> unit
Public Sub InsertRange (index As Integer, collection As IEnumerable(Of T))

Parameter

index
Int32 Int32 Int32 Int32

Der nullbasierte Index, an dem neue Elemente eingefügt werden sollen.The zero-based index at which the new elements should be inserted.

collection
IEnumerable<T> IEnumerable<T> IEnumerable<T> IEnumerable<T>

Die Auflistung, deren Elemente in die List<T> eingefügt werden sollen.The collection whose elements should be inserted into the List<T>. Die Auflistung an sich kann nicht null sein, sie kann jedoch Elemente enthalten, die null sind, wenn Typ T einen Referenztyp darstellt.The collection itself cannot be null, but it can contain elements that are null, if type T is a reference type.

Ausnahmen

index ist kleiner als 0.index is less than 0.

- oder --or- index ist größer als Count.index is greater than Count.

Beispiele

Das folgende Beispiel veranschaulicht InsertRange die-Methode und verschiedene andere Methoden List<T> der-Klasse, die auf Bereiche reagieren.The following example demonstrates InsertRange method and various other methods of the List<T> class that act on ranges. Nachdem die Liste erstellt und mit den Namen von mehreren, friedlichen Pflanzen gegessen werden kann, wird die InsertRange -Methode verwendet, um in der Liste ein Array von drei wilden fleischfressenden Dinosaurier einzufügen, beginnend bei Indexposition 3.After the list has been created and populated with the names of several peaceful plant-eating dinosaurs, the InsertRange method is used to insert an array of three ferocious meat-eating dinosaurs into the list, beginning at index location 3.

using namespace System;
using namespace System::Collections::Generic;

void main()
{
    array<String^>^ input = { "Brachiosaurus", 
                              "Amargasaurus", 
                              "Mamenchisaurus" };

    List<String^>^ dinosaurs = 
        gcnew List<String^>((IEnumerable<String^>^) input);

    Console::WriteLine("\nCapacity: {0}", dinosaurs->Capacity);

    Console::WriteLine();
    for each(String^ dinosaur in dinosaurs )
    {
        Console::WriteLine(dinosaur);
    }

    Console::WriteLine("\nAddRange(dinosaurs)");
    dinosaurs->AddRange(dinosaurs);

    Console::WriteLine();
    for each(String^ dinosaur in dinosaurs )
    {
        Console::WriteLine(dinosaur);
    }

    Console::WriteLine("\nRemoveRange(2, 2)");
    dinosaurs->RemoveRange(2, 2);

    Console::WriteLine();
    for each(String^ dinosaur in dinosaurs )
    {
        Console::WriteLine(dinosaur);
    }

    input = gcnew array<String^> { "Tyrannosaurus", 
                                   "Deinonychus", 
                                   "Velociraptor"};

    Console::WriteLine("\nInsertRange(3, (IEnumerable<String^>^) input)");
    dinosaurs->InsertRange(3, (IEnumerable<String^>^) input);

    Console::WriteLine();
    for each(String^ dinosaur in dinosaurs )
    {
        Console::WriteLine(dinosaur);
    }

    Console::WriteLine("\noutput = dinosaurs->GetRange(2, 3)->ToArray()");
    array<String^>^ output = dinosaurs->GetRange(2, 3)->ToArray();
        
    Console::WriteLine();
    for each(String^ dinosaur in output )
    {
        Console::WriteLine(dinosaur);
    }
}

/* This code example produces the following output:

Capacity: 3

Brachiosaurus
Amargasaurus
Mamenchisaurus

AddRange(dinosaurs)

Brachiosaurus
Amargasaurus
Mamenchisaurus
Brachiosaurus
Amargasaurus
Mamenchisaurus

RemoveRange(2, 2)

Brachiosaurus
Amargasaurus
Amargasaurus
Mamenchisaurus

InsertRange(3, (IEnumerable<String^>^) input)

Brachiosaurus
Amargasaurus
Amargasaurus
Tyrannosaurus
Deinonychus
Velociraptor
Mamenchisaurus

output = dinosaurs->GetRange(2, 3)->ToArray()

Amargasaurus
Tyrannosaurus
Deinonychus
 */
using System;
using System.Collections.Generic;

public class Example
{
    public static void Main()
    {
        string[] input = { "Brachiosaurus", 
                           "Amargasaurus", 
                           "Mamenchisaurus" };

        List<string> dinosaurs = new List<string>(input);

        Console.WriteLine("\nCapacity: {0}", dinosaurs.Capacity);

        Console.WriteLine();
        foreach( string dinosaur in dinosaurs )
        {
            Console.WriteLine(dinosaur);
        }

        Console.WriteLine("\nAddRange(dinosaurs)");
        dinosaurs.AddRange(dinosaurs);

        Console.WriteLine();
        foreach( string dinosaur in dinosaurs )
        {
            Console.WriteLine(dinosaur);
        }

        Console.WriteLine("\nRemoveRange(2, 2)");
        dinosaurs.RemoveRange(2, 2);

        Console.WriteLine();
        foreach( string dinosaur in dinosaurs )
        {
            Console.WriteLine(dinosaur);
        }

        input = new string[] { "Tyrannosaurus", 
                               "Deinonychus", 
                               "Velociraptor"};

        Console.WriteLine("\nInsertRange(3, input)");
        dinosaurs.InsertRange(3, input);

        Console.WriteLine();
        foreach( string dinosaur in dinosaurs )
        {
            Console.WriteLine(dinosaur);
        }

        Console.WriteLine("\noutput = dinosaurs.GetRange(2, 3).ToArray()");
        string[] output = dinosaurs.GetRange(2, 3).ToArray();
        
        Console.WriteLine();
        foreach( string dinosaur in output )
        {
            Console.WriteLine(dinosaur);
        }
    }
}

/* This code example produces the following output:

Capacity: 3

Brachiosaurus
Amargasaurus
Mamenchisaurus

AddRange(dinosaurs)

Brachiosaurus
Amargasaurus
Mamenchisaurus
Brachiosaurus
Amargasaurus
Mamenchisaurus

RemoveRange(2, 2)

Brachiosaurus
Amargasaurus
Amargasaurus
Mamenchisaurus

InsertRange(3, input)

Brachiosaurus
Amargasaurus
Amargasaurus
Tyrannosaurus
Deinonychus
Velociraptor
Mamenchisaurus

output = dinosaurs.GetRange(2, 3).ToArray()

Amargasaurus
Tyrannosaurus
Deinonychus
 */
Imports System.Collections.Generic

Public Class Example

    Public Shared Sub Main()

        Dim input() As String = { "Brachiosaurus", _
                                  "Amargasaurus", _
                                  "Mamenchisaurus" }

        Dim dinosaurs As New List(Of String)(input)

        Console.WriteLine(vbLf & "Capacity: {0}", dinosaurs.Capacity)

        Console.WriteLine()
        For Each dinosaur As String In dinosaurs
            Console.WriteLine(dinosaur)
        Next

        Console.WriteLine(vbLf & "AddRange(dinosaurs)")
        dinosaurs.AddRange(dinosaurs)

        Console.WriteLine()
        For Each dinosaur As String In dinosaurs
            Console.WriteLine(dinosaur)
        Next

        Console.WriteLine(vbLf & "RemoveRange(2, 2)")
        dinosaurs.RemoveRange(2, 2)

        Console.WriteLine()
        For Each dinosaur As String In dinosaurs
            Console.WriteLine(dinosaur)
        Next

        input = New String() { "Tyrannosaurus", _
                               "Deinonychus", _
                               "Velociraptor" }

        Console.WriteLine(vbLf & "InsertRange(3, input)")
        dinosaurs.InsertRange(3, input)

        Console.WriteLine()
        For Each dinosaur As String In dinosaurs
            Console.WriteLine(dinosaur)
        Next

        Console.WriteLine(vbLf & "output = dinosaurs.GetRange(2, 3).ToArray")
        Dim output() As String = dinosaurs.GetRange(2, 3).ToArray()
        
        Console.WriteLine()
        For Each dinosaur As String In output
            Console.WriteLine(dinosaur)
        Next

    End Sub
End Class

' This code example produces the following output:
'
'Capacity: 3
'
'Brachiosaurus
'Amargasaurus
'Mamenchisaurus
'
'AddRange(dinosaurs)
'
'Brachiosaurus
'Amargasaurus
'Mamenchisaurus
'Brachiosaurus
'Amargasaurus
'Mamenchisaurus
'
'RemoveRange(2, 2)
'
'Brachiosaurus
'Amargasaurus
'Amargasaurus
'Mamenchisaurus
'
'InsertRange(3, input)
'
'Brachiosaurus
'Amargasaurus
'Amargasaurus
'Tyrannosaurus
'Deinonychus
'Velociraptor
'Mamenchisaurus
'
'output = dinosaurs.GetRange(2, 3).ToArray
'
'Amargasaurus
'Tyrannosaurus
'Deinonychus

Hinweise

List<T>akzeptiert null als gültigen Wert für Verweis Typen und ermöglicht doppelte Elemente.List<T> accepts null as a valid value for reference types and allows duplicate elements.

Wenn das neue Count -Element ( Count das aktuelle plus die Größe der Auflistung) größer als Capacityist, List<T> wird die Kapazität des-Elements angehoben, indem das interne Array automatisch neu zugewiesen wird, um die neuen Elemente zu unterstützen, und der vorhandene Elemente werden in das neue Array kopiert, bevor die neuen Elemente hinzugefügt werden.If the new Count (the current Count plus the size of the collection) will be greater than Capacity, the capacity of the List<T> is increased by automatically reallocating the internal array to accommodate the new elements, and the existing elements are copied to the new array before the new elements are added.

Wenn index List<T>gleich ist, werden die Elemente am Ende von hinzugefügt. CountIf index is equal to Count, the elements are added to the end of List<T>.

Die Reihenfolge der Elemente in der Auflistung wird im List<T>beibehalten.The order of the elements in the collection is preserved in the List<T>.

Bei dieser Methode handelt es sich um einen O (n * m)-Vorgang, wobei n die Anzahl der hinzu zufügenden Elemente und m ist Count.This method is an O(n * m) operation, where n is the number of elements to be added and m is Count.

Gilt für:

Siehe auch