DbExpressionBuilder.Exists Method (DbExpression)
Creates a new DbExpression that determines whether the specified set argument is non-empty.
Assembly: EntityFramework (in EntityFramework.dll)
Parameters
- argument
-
Type:
System.Data.Entity.Core.Common.CommandTrees.DbExpression
An expression that specifies the input set.
Return Value
Type: System.Data.Entity.Core.Common.CommandTrees.DbExpressionA new DbNotExpression applied to a new DbIsEmptyExpression with the specified argument.
Exception | Condition |
---|---|
ArgumentNullException | argument is null. |
ArgumentException | argument does not have a collection result type. |