VerticalGridExtension.BindToLINQ(Type, String, EventHandler<LinqServerModeDataSourceSelectEventArgs>) Method

Binds the VerticalGrid to a queryable source in database server mode.

Namespace: DevExpress.Web.Mvc

Assembly: DevExpress.Web.Mvc5.v24.2.dll

Declaration

C#

public VerticalGridExtension BindToLINQ(
    Type contextType,
    string tableName,
    EventHandler<LinqServerModeDataSourceSelectEventArgs> selectingMethod
)

VB.NET

Public Function BindToLINQ(
    contextType As Type,
    tableName As String,
    selectingMethod As EventHandler(Of LinqServerModeDataSourceSelectEventArgs)
) As VerticalGridExtension

Parameters

Name	Type	Description
contextType	Type	A Type specifying the DataContext type.
tableName	String	A string specifying the table name.
selectingMethod	EventHandler<LinqServerModeDataSourceSelectEventArgs>	A method to which selection logic is delegated.

Returns

Type	Description
VerticalGridExtension	A VerticalGridExtension object specifying the VerticalGrid extension.

Remarks

Using the BindToLINQ method, you can easily bind the VerticalGrid to queryable data sources. Simply call the method, pass the DataContext and table name as method parameters, and specify the key field via the VerticalGrid’s GridSettingsBase.KeyFieldName property.

Internally, the BindToLINQ method uses our LinqServerModeDataSource component, which was specifically designed to allow the VerticalGrid to efficiently process large amounts of data. The LinqServerModeDataSource component automatically enables database server mode to optimize the execution of all LINQ queries initiated by the VerticalGrid. In this mode, the VerticalGrid loads records on demand and performs data-aware operations (sorting, filtering, grouping, etc.) on the data server. This technique significantly improves the VerticalGrid’s speed and responsiveness.

Note

The current BindToLINQ overload catches and conceals any exception thrown by an IQueryable provider. To catch these exceptions manually, use the BindToLINQ(string contextTypeName, string tableName, EventHandler<LinqServerModeDataSourceSelectEventArgs> selectingMethod, EventHandler<ServerModeExceptionThrownEventArgs> exceptionThrownMethod) overload method.