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Sign inEdmFunctions.Substring(DbExpression, DbExpression, DbExpression) Method
Definition
Important
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Creates a DbFunctionExpression that invokes the canonical 'Substring' function with the specified arguments, which must have a string and integer numeric result types. The result type of the expression is string.
public:
[System::Runtime::CompilerServices::Extension]
static System::Data::Common::CommandTrees::DbFunctionExpression ^ Substring(System::Data::Common::CommandTrees::DbExpression ^ stringArgument, System::Data::Common::CommandTrees::DbExpression ^ start, System::Data::Common::CommandTrees::DbExpression ^ length);C#
public static System.Data.Common.CommandTrees.DbFunctionExpression Substring(this System.Data.Common.CommandTrees.DbExpression stringArgument, System.Data.Common.CommandTrees.DbExpression start, System.Data.Common.CommandTrees.DbExpression length);static member Substring : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpression<Extension()>
Public Function Substring (stringArgument As DbExpression, start As DbExpression, length As DbExpression) As DbFunctionExpression- stringArgument
- DbExpression
An expression that specifies the string from which to extract the substring.
- start
- DbExpression
An expression that specifies the starting index from which the substring should be taken.
- length
- DbExpression
An expression that specifies the length of the substring.
A new DbFunctionExpression that returns the substring of length length from stringArgument starting at start.
stringArgument, start, or length is null.
stringArgument, start, or length is invalid.
Substring requires that the index specified by start be <b>1-based</b>.
Applies to
| 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 |