A hint to create and use an index on the specified data column. The hint has default action.

Namespace: C1.LiveLinq.AdoNet
Assembly: C1.LiveLinq (in C1.LiveLinq.dll)

Syntax

C#
public static T IndexedField<T>( this DataRow row, DataColumn column )

Visual Basic
<ExtensionAttribute> _ Public Shared Function IndexedField(Of T) ( _ row As DataRow, _ column As DataColumn _ ) As T

Parameters

row: Type: System.Data..::..DataRow
The data row.

column: Type: System.Data..::..DataColumn
The data column.

Type Parameters

T: The type of the data column

Return Value

The data column value.

Remarks

Hints are used declaratively. They tell LiveLinq query optimizer to create and use an index on that column, if possible. When the query is executed, the hint method IndexedField is replaced with the standard LINQ to DataSet extension method Field. See Hints for more details.

Examples

Copy CodeC#

var query = from c in customersTable
    where c.IndexedField<string>(customerColumn) == "ALFKI"
    select c;