DbGroupExpressionBinding.Expression 属性

定义

获取或设置用于定义输入集的 DbExpressionGets or sets the DbExpression that defines the input set.

public:
 property System::Data::Common::CommandTrees::DbExpression ^ Expression { System::Data::Common::CommandTrees::DbExpression ^ get(); };
public System.Data.Common.CommandTrees.DbExpression Expression { get; }
member this.Expression : System.Data.Common.CommandTrees.DbExpression
Public ReadOnly Property Expression As DbExpression

属性值

DbExpression

用于定义输入集的 DbExpressionThe DbExpression that defines the input set.

例外

该表达式是 nullThe expression is null.

表达式与 DbGroupExpressionBinding 的命令目录树不关联,或它的结果类型不等同于或不能提升为当前属性值的结果类型。The expression is not associated with the command tree of the DbGroupExpressionBinding, or its result type is not equal or promotable to the result type of the current value of the property.

适用于