Queryable.SequenceEqual Método

Definición

Determina si dos secuencias son iguales.Determines whether two sequences are equal.

Sobrecargas

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

Determina si dos secuencias son iguales utilizando el comparador de igualdad predeterminado para comparar los elementos.Determines whether two sequences are equal by using the default equality comparer to compare elements.

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

Determina si dos secuencias son iguales utilizando una interfaz IEqualityComparer<T> especificada para comparar los elementos.Determines whether two sequences are equal by using a specified IEqualityComparer<T> to compare elements.

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

Determina si dos secuencias son iguales utilizando el comparador de igualdad predeterminado para comparar los elementos.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

Parámetros de tipo

TSource

Tipo de los elementos de las secuencias de entrada.The type of the elements of the input sequences.

Parámetros

source1
IQueryable<TSource>

IQueryable<T> cuyos elementos se van a comparar con los de source2.An IQueryable<T> whose elements to compare to those of source2.

source2
IEnumerable<TSource>

IEnumerable<T> cuyos elementos se van a comparar con los de la primera secuencia.An IEnumerable<T> whose elements to compare to those of the first sequence.

Devoluciones

Boolean

true si las dos secuencias de origen tienen la misma longitud y sus elementos correspondientes son iguales; de lo contrario, false.true if the two source sequences are of equal length and their corresponding elements compare equal; otherwise, false.

Excepciones

source1 o source2 es null.source1 or source2 is null.

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) para determinar si dos secuencias son iguales.The following code example demonstrates how to use SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) to determine whether two sequences are equal. En este ejemplo, las secuencias son iguales.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.

En el ejemplo de código siguiente se comparan dos secuencias que no son iguales.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.

Comentarios

El SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) método genera un MethodCallExpression que representa la llamada a SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) sí mismo como un método genérico construido.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. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source1 parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source1 parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) la llamada depende de la implementación del tipo del source1 parámetro.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. El comportamiento esperado es que determina si las dos secuencias de origen son iguales.The expected behavior is that it determines if the two source sequences are equal.

Se aplica a

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

Determina si dos secuencias son iguales utilizando una interfaz IEqualityComparer<T> especificada para comparar los elementos.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);
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

Parámetros de tipo

TSource

Tipo de los elementos de las secuencias de entrada.The type of the elements of the input sequences.

Parámetros

source1
IQueryable<TSource>

IQueryable<T> cuyos elementos se van a comparar con los de source2.An IQueryable<T> whose elements to compare to those of source2.

source2
IEnumerable<TSource>

IEnumerable<T> cuyos elementos se van a comparar con los de la primera secuencia.An IEnumerable<T> whose elements to compare to those of the first sequence.

comparer
IEqualityComparer<TSource>

IEqualityComparer<T> que se va a utilizar para comparar elementos.An IEqualityComparer<T> to use to compare elements.

Devoluciones

Boolean

true si las dos secuencias de origen tienen la misma longitud y sus elementos correspondientes son iguales; de lo contrario, false.true if the two source sequences are of equal length and their corresponding elements compare equal; otherwise, false.

Excepciones

source1 o source2 es null.source1 or source2 is null.

Comentarios

El SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) método genera un MethodCallExpression que representa la llamada a SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) sí mismo como un método genérico construido.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. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source1 parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source1 parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) la llamada depende de la implementación del tipo del source1 parámetro.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. El comportamiento esperado es que determina si las dos secuencias de origen son iguales mediante el uso comparer de para comparar elementos.The expected behavior is that it determines if the two source sequences are equal by using comparer to compare elements.

Se aplica a