DbExpressionBuilder.Case Method
Definition
Important
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Creates a new DbCaseExpression.
public:
static System::Data::Common::CommandTrees::DbCaseExpression ^ Case(System::Collections::Generic::IEnumerable<System::Data::Common::CommandTrees::DbExpression ^> ^ whenExpressions, System::Collections::Generic::IEnumerable<System::Data::Common::CommandTrees::DbExpression ^> ^ thenExpressions, System::Data::Common::CommandTrees::DbExpression ^ elseExpression);public static System.Data.Common.CommandTrees.DbCaseExpression Case (System.Collections.Generic.IEnumerable<System.Data.Common.CommandTrees.DbExpression> whenExpressions, System.Collections.Generic.IEnumerable<System.Data.Common.CommandTrees.DbExpression> thenExpressions, System.Data.Common.CommandTrees.DbExpression elseExpression);static member Case : seq<System.Data.Common.CommandTrees.DbExpression> * seq<System.Data.Common.CommandTrees.DbExpression> * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbCaseExpressionPublic Function Case (whenExpressions As IEnumerable(Of DbExpression), thenExpressions As IEnumerable(Of DbExpression), elseExpression As DbExpression) As DbCaseExpressionParameters
- whenExpressions
- IEnumerable<DbExpression>
A list of expressions that provide the conditional for of each case.
- thenExpressions
- IEnumerable<DbExpression>
A list of expressions that provide the result of each case.
- elseExpression
- DbExpression
An expression that defines the result when no case is matched.
Returns
A new DbCaseExpression with the specified cases and default result.
Exceptions
whenExpressions or thenExpressions is null or contains null, or elseExpression is null.
whenExpressions or thenExpressions is empty or whenExpressions contains an expression with a non-Boolean result type, or no common result type exists for all expressions in thenExpressions and elseExpression.
