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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
An expression that specifies the string to search for stringToFind
.
An expression that specifies the string to locate within searchString
should be checked.
A new DbFunctionExpression that returns the first index of stringToFind
in searchString
.
searchString
or stringToFind
is null
.
searchString
or stringToFind
is invalid.
The index returned by IndexOf is <b>1-based</b>.
Product | Versions |
---|---|
.NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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