EdmFunctions.IndexOf(DbExpression, DbExpression) Method
Definition
Important
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Creates a DbFunctionExpression that invokes the canonical 'IndexOf' function with the specified arguments, which must each have a string result type. The result type of the expression is Edm.Int32.
public:
[System::Runtime::CompilerServices::Extension]
static System::Data::Common::CommandTrees::DbFunctionExpression ^ IndexOf(System::Data::Common::CommandTrees::DbExpression ^ searchString, System::Data::Common::CommandTrees::DbExpression ^ stringToFind);
public static System.Data.Common.CommandTrees.DbFunctionExpression IndexOf (this System.Data.Common.CommandTrees.DbExpression searchString, System.Data.Common.CommandTrees.DbExpression stringToFind);
static member IndexOf : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpression
<Extension()>
Public Function IndexOf (searchString As DbExpression, stringToFind As DbExpression) As DbFunctionExpression
Parameters
- searchString
- DbExpression
An expression that specifies the string to search for stringToFind
.
- stringToFind
- DbExpression
An expression that specifies the string to locate within searchString
should be checked.
Returns
A new DbFunctionExpression that returns the first index of stringToFind
in searchString
.
Exceptions
searchString
or stringToFind
is null
.
searchString
or stringToFind
is invalid.
Remarks
The index returned by IndexOf is <b>1-based</b>.
Applies to
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