WcfServerModeSource Class

The data source for the GridControl and SearchLookUpEdit controls that binds these controls to a WCF Data Service in Server Mode.

Namespace: DevExpress.Data.WcfLinq

Assembly: DevExpress.Data.v20.1.dll

Declaration

[ToolboxBitmap(typeof(ResFinder), "Bitmaps256.WcfServerModeSource.bmp")]
public class WcfServerModeSource :
    Component,
    IListSource,
    ISupportInitialize,
    IWcfServerModeFrontEndOwner,
    IDXCloneable
<ToolboxBitmap(GetType(ResFinder), "Bitmaps256.WcfServerModeSource.bmp")>
Public Class WcfServerModeSource
    Inherits Component
    Implements IListSource,
               ISupportInitialize,
               IWcfServerModeFrontEndOwner,
               IDXCloneable

Remarks

Server mode allows a data-aware control to rapidly work with large datasets. Loading records in small portions on demand and performing data-aware operations on the data server side are the key features of server mode. When the control needs to display a specific portion of data, it calls a specific method of the bound server mode data source. This method sends a corresponding request to the data store, and upon receiving the results, passes them back to the control. The WcfServerModeSource component implements the IListSource interface, and can be used as a data source for a control supporting the server mode feature.

Use WcfServerModeSource to bind a server-mode enabled control to a WCF Data Service. Specify the type of objects contained in the query result using the WcfServerModeSource.ElementType property. Specify the required query request to a WCF Data Service via the WcfServerModeSource.Query property. Bind the control to the WcfServerModeSource component.


public MainWindow() {
    InitializeComponent();
    grid.DataSource = new WcfServerModeSource() {        
        KeyExpression = "CustomerID",
        Query = myDataServiceContext.Customers
    };
}

You can see a detailed example in the How to use the WcfServerModeSource component as a data source article.

NOTE

WcfServerModeSource is a read-only data source.

Inheritance

See Also