DbExpressionBuilder.TreatAs(DbExpression, TypeUsage) Method
Definition
Important
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Creates a new DbTreatExpression.
public:
[System::Runtime::CompilerServices::Extension]
static System::Data::Common::CommandTrees::DbTreatExpression ^ TreatAs(System::Data::Common::CommandTrees::DbExpression ^ argument, System::Data::Metadata::Edm::TypeUsage ^ treatType);
public static System.Data.Common.CommandTrees.DbTreatExpression TreatAs (this System.Data.Common.CommandTrees.DbExpression argument, System.Data.Metadata.Edm.TypeUsage treatType);
static member TreatAs : System.Data.Common.CommandTrees.DbExpression * System.Data.Metadata.Edm.TypeUsage -> System.Data.Common.CommandTrees.DbTreatExpression
<Extension()>
Public Function TreatAs (argument As DbExpression, treatType As TypeUsage) As DbTreatExpression
Parameters
- argument
- DbExpression
An expression that specifies the instance.
- treatType
- TypeUsage
Type metadata for the treat-as type.
Returns
A new DbTreatExpression with the specified argument and type.
Exceptions
argument
or treatType
is null.
treatType
is not in the same type hierarchy as the result type of argument
.
Remarks
DbTreatExpression requires that argument
has a polymorphic result type, and that treatType
is a type from the same type hierarchy as that result type.
Applies to
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