RelationalQueryableMethodTranslatingExpressionVisitor.TranslateGroupBy 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Query

程序集:

Microsoft.EntityFrameworkCore.Relational.dll

包:

Microsoft.EntityFrameworkCore.Relational v8.0.0

GroupBy<TSource,TKey>(IQueryable<TSource>, Expression<Func<TSource,TKey>>)转换给定源上的方法和其他重载。

protected override Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression? TranslateGroupBy (Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.LambdaExpression keySelector, System.Linq.Expressions.LambdaExpression? elementSelector, System.Linq.Expressions.LambdaExpression? resultSelector);

override this.TranslateGroupBy : Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression * System.Linq.Expressions.LambdaExpression * System.Linq.Expressions.LambdaExpression * System.Linq.Expressions.LambdaExpression -> Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression

Protected Overrides Function TranslateGroupBy (source As ShapedQueryExpression, keySelector As LambdaExpression, elementSelector As LambdaExpression, resultSelector As LambdaExpression) As ShapedQueryExpression

参数

source

ShapedQueryExpression

对其应用运算符的形状查询。

keySelector

LambdaExpression

调用中提供的键选择器。

elementSelector

LambdaExpression

调用中提供的元素选择器。

resultSelector

LambdaExpression

调用中提供的结果选择器。

返回

ShapedQueryExpression

转换后的形状查询。