Queryable.SequenceEqual Method

Definition

Bestimmt, ob zwei Sequenzen gleich sind.Determines whether two sequences are equal.

Overloads

SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>)

Bestimmt mithilfe des Standardgleichheitsvergleichs zum Vergleichen von Elementen, ob zwei Sequenzen gleich sind.Determines whether two sequences are equal by using the default equality comparer to compare elements.

SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)

Bestimmt mithilfe eines angegebenen IEqualityComparer<T> zum Vergleichen von Elementen, ob zwei Sequenzen gleich sind.Determines whether two sequences are equal by using a specified IEqualityComparer<T> to compare elements.

SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>)

Bestimmt mithilfe des Standardgleichheitsvergleichs zum Vergleichen von Elementen, ob zwei Sequenzen gleich sind.Determines whether two sequences are equal by using the default equality comparer to compare elements.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static bool SequenceEqual(System::Linq::IQueryable<TSource> ^ source1, System::Collections::Generic::IEnumerable<TSource> ^ source2);
public static bool SequenceEqual<TSource> (this System.Linq.IQueryable<TSource> source1, System.Collections.Generic.IEnumerable<TSource> source2);
static member SequenceEqual : System.Linq.IQueryable<'Source> * seq<'Source> -> bool
<Extension()>
Public Function SequenceEqual(Of TSource) (source1 As IQueryable(Of TSource), source2 As IEnumerable(Of TSource)) As Boolean

Type Parameters

TSource

Der Typ der Elemente der Eingabesequenzen.The type of the elements of the input sequences.

Parameters

source1
IQueryable<TSource>

Ein IQueryable<T> dessen Elemente mit den Elementen von source2 verglichen werden sollen.An IQueryable<T> whose elements to compare to those of source2.

source2
IEnumerable<TSource>

Ein IEnumerable<T>, dessen Elemente mit den Elementen der ersten Sequenz verglichen werden sollen.An IEnumerable<T> whose elements to compare to those of the first sequence.

Returns

Boolean

true, wenn die zwei Quellsequenzen von gleicher Länge sind und ihre entsprechenden Elemente als gleich gelten, andernfalls false.true if the two source sequences are of equal length and their corresponding elements compare equal; otherwise, false.

Exceptions

source1 oder source2 ist null.source1 or source2 is null.

Examples

Im folgenden Codebeispiel wird veranschaulicht, wie SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) verwendet wird, um zu bestimmen, ob zwei Sequenzen gleich sind.The following code example demonstrates how to use SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) to determine whether two sequences are equal. In diesem Beispiel sind die Sequenzen gleich.In this example the sequences are equal.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void SequenceEqualEx1()
{
    Pet pet1 = new Pet { Name = "Turbo", Age = 2 };
    Pet pet2 = new Pet { Name = "Peanut", Age = 8 };

    // Create two lists of pets.
    List<Pet> pets1 = new List<Pet> { pet1, pet2 };
    List<Pet> pets2 = new List<Pet> { pet1, pet2 };

    // Determine if the lists are equal.
    bool equal = pets1.AsQueryable().SequenceEqual(pets2);

    Console.WriteLine(
        "The lists {0} equal.",
        equal ? "are" : "are not");
}

/*
    This code produces the following output:

    The lists are equal.
*/

Class Pet
    Public Name As String
    Public Age As Integer
End Class

Shared Sub SequenceEqualEx1()
    Dim pet1 As New Pet With {.Name = "Turbo", .Age = 2}
    Dim pet2 As New Pet With {.Name = "Peanut", .Age = 8}

    ' Create two lists of pets.
    Dim pets1 As New List(Of Pet)(New Pet() {pet1, pet2})
    Dim pets2 As New List(Of Pet)(New Pet() {pet1, pet2})

    ' Determine if the lists are equal.
    Dim equal As Boolean = pets1.AsQueryable().SequenceEqual(pets2)

    ' Display the output.
    Dim text As String = IIf(equal, "are", "are not")
    MsgBox("The lists " & text & " equal.")
End Sub

'This code produces the following output:

'The lists are equal.

Im folgenden Codebeispiel werden zwei Sequenzen verglichen, die nicht gleich sind.The following code example compares two sequences that are not equal.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void SequenceEqualEx2()
{
    Pet pet1 = new Pet() { Name = "Turbo", Age = 2 };
    Pet pet2 = new Pet() { Name = "Peanut", Age = 8 };

    // Create two lists of pets.
    List<Pet> pets1 = new List<Pet> { pet1, pet2 };
    List<Pet> pets2 = new List<Pet> {
        new Pet { Name = "Turbo", Age = 2 },
        new Pet { Name = "Peanut", Age = 8 }
    };

    // Determine if the lists are equal.
    bool equal = pets1.AsQueryable().SequenceEqual(pets2);

    Console.WriteLine("The lists {0} equal.", equal ? "are" : "are NOT");
}

/*
    This code produces the following output:

    The lists are NOT equal.
*/

Class Pet
    Public Name As String
    Public Age As Integer
End Class

Shared Sub SequenceEqualEx2()
    Dim pet1 As New Pet With {.Name = "Turbo", .Age = 2}
    Dim pet2 As New Pet With {.Name = "Peanut", .Age = 8}

    ' Create two lists of pets.
    Dim pets1 As New List(Of Pet)()
    pets1.Add(pet1)
    pets1.Add(pet2)

    Dim pets2 As New List(Of Pet)()
    pets2.Add(New Pet With {.Name = "Turbo", .Age = 2})
    pets2.Add(New Pet With {.Name = "Peanut", .Age = 8})

    ' Determine if the lists are equal.
    Dim equal As Boolean = pets1.AsQueryable().SequenceEqual(pets2)

    ' Display the output.
    Dim text As String = IIf(equal, "are", "are not")
    MsgBox("The lists " & text & " equal.")
End Sub

' This code produces the following output:

' The lists are not equal.

Remarks

Die SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>)-Methode generiert eine MethodCallExpression, die den Aufruf von SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) selbst als konstruierte generische Methode darstellt.The SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) method generates a MethodCallExpression that represents calling SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) itself as a constructed generic method. Anschließend übergibt Sie den MethodCallExpression an die Execute<TResult>(Expression)-Methode der IQueryProvider, die durch die Provider-Eigenschaft des source1-Parameters dargestellt wird.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source1 parameter.

Das Abfrage Verhalten, das auftritt, wenn eine Ausdrucks Baumstruktur ausgeführt wird, die den Aufruf von SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) darstellt, hängt von der Implementierung des Typs des source1-Parameters ab.The query behavior that occurs as a result of executing an expression tree that represents calling SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) depends on the implementation of the type of the source1 parameter. Das erwartete Verhalten ist, dass es bestimmt, ob die beiden Quell Sequenzen gleich sind.The expected behavior is that it determines if the two source sequences are equal.

SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)

Bestimmt mithilfe eines angegebenen IEqualityComparer<T> zum Vergleichen von Elementen, ob zwei Sequenzen gleich sind.Determines whether two sequences are equal by using a specified IEqualityComparer<T> to compare elements.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static bool SequenceEqual(System::Linq::IQueryable<TSource> ^ source1, System::Collections::Generic::IEnumerable<TSource> ^ source2, System::Collections::Generic::IEqualityComparer<TSource> ^ comparer);
public static bool SequenceEqual<TSource> (this System.Linq.IQueryable<TSource> source1, System.Collections.Generic.IEnumerable<TSource> source2, System.Collections.Generic.IEqualityComparer<TSource> comparer);
static member SequenceEqual : System.Linq.IQueryable<'Source> * seq<'Source> * System.Collections.Generic.IEqualityComparer<'Source> -> bool
<Extension()>
Public Function SequenceEqual(Of TSource) (source1 As IQueryable(Of TSource), source2 As IEnumerable(Of TSource), comparer As IEqualityComparer(Of TSource)) As Boolean

Type Parameters

TSource

Der Typ der Elemente der Eingabesequenzen.The type of the elements of the input sequences.

Parameters

source1
IQueryable<TSource>

Ein IQueryable<T> dessen Elemente mit den Elementen von source2 verglichen werden sollen.An IQueryable<T> whose elements to compare to those of source2.

source2
IEnumerable<TSource>

Ein IEnumerable<T>, dessen Elemente mit den Elementen der ersten Sequenz verglichen werden sollen.An IEnumerable<T> whose elements to compare to those of the first sequence.

comparer
IEqualityComparer<TSource>

Ein IEqualityComparer<T>, der zum Vergleichen von Elementen verwendet werden soll.An IEqualityComparer<T> to use to compare elements.

Returns

Boolean

true, wenn die zwei Quellsequenzen von gleicher Länge sind und ihre entsprechenden Elemente als gleich gelten, andernfalls false.true if the two source sequences are of equal length and their corresponding elements compare equal; otherwise, false.

Exceptions

source1 oder source2 ist null.source1 or source2 is null.

Remarks

Die SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)-Methode generiert eine MethodCallExpression, die den Aufruf von SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) selbst als konstruierte generische Methode darstellt.The SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) method generates a MethodCallExpression that represents calling SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) itself as a constructed generic method. Anschließend übergibt Sie den MethodCallExpression an die Execute<TResult>(Expression)-Methode der IQueryProvider, die durch die Provider-Eigenschaft des source1-Parameters dargestellt wird.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source1 parameter.

Das Abfrage Verhalten, das auftritt, wenn eine Ausdrucks Baumstruktur ausgeführt wird, die den Aufruf von SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) darstellt, hängt von der Implementierung des Typs des source1-Parameters ab.The query behavior that occurs as a result of executing an expression tree that represents calling SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) depends on the implementation of the type of the source1 parameter. Das erwartete Verhalten ist, dass es bestimmt, ob die beiden Quell Sequenzen gleich sind, indem comparer zum Vergleichen von Elementen verwendet wird.The expected behavior is that it determines if the two source sequences are equal by using comparer to compare elements.

Applies to