Queryable.Skip(IQueryable<TSource>, Int32) Queryable.Skip(IQueryable<TSource>, Int32) Queryable.Skip(IQueryable<TSource>, Int32) Queryable.Skip(IQueryable<TSource>, Int32) Method

Definizione

Ignora un numero specificato di elementi in una sequenza e quindi restituisce gli elementi rimanenti.Bypasses a specified number of elements in a sequence and then returns the remaining elements.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::IQueryable<TSource> ^ Skip(System::Linq::IQueryable<TSource> ^ source, int count);
public static System.Linq.IQueryable<TSource> Skip<TSource> (this System.Linq.IQueryable<TSource> source, int count);
static member Skip : System.Linq.IQueryable<'Source> * int -> System.Linq.IQueryable<'Source>
<Extension()>
Public Function Skip(Of TSource) (source As IQueryable(Of TSource), count As Integer) As IQueryable(Of TSource)

Parametri di tipo

TSource

Tipo degli elementi di source.The type of the elements of source.

Parametri

source
IQueryable<TSource>

Oggetto IQueryable<T> dal quale restituire elementi.An IQueryable<T> to return elements from.

count
Int32 Int32 Int32 Int32

Il numero di elementi da ignorare prima di restituire gli elementi rimanenti.The number of elements to skip before returning the remaining elements.

Restituisce

IQueryable<TSource>

Un oggetto IQueryable<T> che contiene elementi presenti dopo l'indice specificato nella sequenza di input.An IQueryable<T> that contains elements that occur after the specified index in the input sequence.

Eccezioni

Esempi

Nell'esempio di codice riportato di seguito viene Skip<TSource>(IQueryable<TSource>, Int32) illustrato come utilizzare per ignorare un numero specificato di elementi in una matrice ordinata e restituire gli elementi rimanenti.The following code example demonstrates how to use Skip<TSource>(IQueryable<TSource>, Int32) to skip a specified number of elements in a sorted array and return the remaining elements.

int[] grades = { 59, 82, 70, 56, 92, 98, 85 };

// Sort the grades in descending order and
// get all except the first three.
IEnumerable<int> lowerGrades =
    grades.AsQueryable().OrderByDescending(g => g).Skip(3);

Console.WriteLine("All grades except the top three are:");
foreach (int grade in lowerGrades)
    Console.WriteLine(grade);

/*
    This code produces the following output:

    All grades except the top three are:
    82
    70
    59
    56
*/

Dim grades() As Integer = {59, 82, 70, 56, 92, 98, 85}

' Sort the grades in descending order and
' get all except the first three.
Dim lowerGrades = grades.AsQueryable() _
    .OrderByDescending(Function(g) g) _
    .Skip(3)

Dim output As New System.Text.StringBuilder
output.AppendLine("All grades except the top three are:")
For Each grade As Integer In lowerGrades
    output.AppendLine(grade)
Next

' Display the output.
MsgBox(output.ToString())

' This code produces the following output:

' All grades except the top three are:
' 82
' 70
' 59
' 56

Commenti

Il Skip<TSource>(IQueryable<TSource>, Int32) metodo genera un MethodCallExpression oggetto che rappresenta Skip<TSource>(IQueryable<TSource>, Int32) la chiamata a se stesso come metodo generico costruito.The Skip<TSource>(IQueryable<TSource>, Int32) method generates a MethodCallExpression that represents calling Skip<TSource>(IQueryable<TSource>, Int32) itself as a constructed generic method. Passa MethodCallExpression IQueryProvider quindi al source metodo dell'oggetto rappresentato dalla proprietàdelparametro.Provider CreateQuery(Expression)It then passes the MethodCallExpression to the CreateQuery(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

Il comportamento della query che si verifica in seguito all'esecuzione di un albero delle espressioni che Skip<TSource>(IQueryable<TSource>, Int32) rappresenta la chiamata dipende dall'implementazione del tipo source di parametro.The query behavior that occurs as a result of executing an expression tree that represents calling Skip<TSource>(IQueryable<TSource>, Int32) depends on the implementation of the type of the source parameter. Il comportamento previsto è che ignora i primi count elementi in source e restituisce gli elementi rimanenti.The expected behavior is that it skips the first count elements in source and returns the remaining elements.

Si applica a