EdmFunctions.StartsWith Method (DbExpression, DbExpression)
Creates a DbFunctionExpression that invokes the canonical 'StartsWith' function with the specified arguments, which must each have a string result type. The result type of the expression is Boolean.
Assembly: EntityFramework (in EntityFramework.dll)
public static DbFunctionExpression StartsWith( this DbExpression stringArgument, DbExpression prefix )
Parameters
- stringArgument
-
Type:
System.Data.Entity.Core.Common.CommandTrees.DbExpression
An expression that specifies the string to check for the specified prefix.
- prefix
-
Type:
System.Data.Entity.Core.Common.CommandTrees.DbExpression
An expression that specifies the prefix for which stringArgument should be checked.
Return Value
Type: System.Data.Entity.Core.Common.CommandTrees.DbFunctionExpressionA new DbFunctionExpression that indicates whether stringArgument starts with prefix.
Exception | Condition |
---|---|
ArgumentNullException | stringArgument or prefix is null. |
ArgumentException | No overload of the canonical 'StartsWith' function accepts arguments with the result types of stringArgument and prefix. |