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RelationalQueryableMethodTranslatingExpressionVisitor.TranslateElementAtOrDefault Method

  • Reference

Definition

Namespace:
Microsoft.EntityFrameworkCore.Query
Assembly:
Microsoft.EntityFrameworkCore.Relational.dll
Package:
Microsoft.EntityFrameworkCore.Relational v3.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v3.1.0
Package:
Microsoft.EntityFrameworkCore.Relational v5.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v6.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v7.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v8.0.0

Translates ElementAt<TSource>(IQueryable<TSource>, Int32) method or ElementAtOrDefault<TSource>(IQueryable<TSource>, Int32) over the given source.

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

Parameters

source
ShapedQueryExpression

The shaped query on which the operator is applied.

index
Expression

The index of the element.

returnDefault
Boolean

A value indicating whether default should be returned or throw.

Returns

ShapedQueryExpression

The shaped query after translation.

Applies to