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QueryableMethodTranslatingExpressionVisitor.TranslateElementAtOrDefault Metode

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Definisi

Ruang nama:
Microsoft.EntityFrameworkCore.Query
Rakitan:
Microsoft.EntityFrameworkCore.dll
Paket:
Microsoft.EntityFrameworkCore v3.0.0
Paket:
Microsoft.EntityFrameworkCore v3.1.0
Paket:
Microsoft.EntityFrameworkCore v5.0.0
Paket:
Microsoft.EntityFrameworkCore v6.0.0
Paket:
Microsoft.EntityFrameworkCore v7.0.0
Paket:
Microsoft.EntityFrameworkCore v8.0.0

Menerjemahkan ElementAt<TSource>(IQueryable<TSource>, Int32) metode atau ElementAtOrDefault<TSource>(IQueryable<TSource>, Int32) melalui sumber yang diberikan.

protected abstract Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression TranslateElementAtOrDefault (Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.Expression index, bool returnDefault);
protected abstract Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression? TranslateElementAtOrDefault (Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.Expression index, bool returnDefault);
abstract member TranslateElementAtOrDefault : Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression * System.Linq.Expressions.Expression * bool -> Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression
Protected MustOverride Function TranslateElementAtOrDefault (source As ShapedQueryExpression, index As Expression, returnDefault As Boolean) As ShapedQueryExpression

Parameter

source
ShapedQueryExpression

Kueri berbentuk tempat operator diterapkan.

index
Expression

Indeks elemen .

returnDefault
Boolean

Nilai yang menunjukkan apakah default harus dikembalikan atau dilemparkan.

Mengembalikan

ShapedQueryExpression

Kueri berbentuk setelah terjemahan.

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