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    Binding to Telerik ClientDataSource

    • Andrew

    Since Q2 2014 the RadDropDownTree can be bound to RadClientDataSource control. This functionality is provided out of the box through the server-side ClientDataSourceID property.

    RadDropDownTree needs the following properties in order to load its items properly:

    • DataFieldID—defines the data source field name which will be associated with the unique identifier of the node.
    • DataFieldParentID—defines the data source field name which will be associated with the parent ID of the node.
    • DataText—defines the data source field name which will be shown as a text of the node.
    • DataValue—defines the data source field name which will be considered as a value of the node.

    Note: The web service returns more than collection and OnDataRequested event is used to specify which one should be processed by the client data source control.

    • DefaultCS.aspx
    <%@ Page Title="" Language="C#"  AutoEventWireup="true" Inherits="Telerik.QuickStart.QsfPage" %>
     
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
     
    <!DOCTYPE html>
    <html xmlns='http://www.w3.org/1999/xhtml'>
    <head runat="server">
        <title>Telerik ASP.NET Example</title>
    </head>
    <body>
        <form id="form1" runat="server">
        <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
        <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
        <telerik:RadClientDataSource runat="server" ID="RadClientDataSource1">
            <DataSource>
                <WebServiceDataSourceSettings ServiceType="OData" BaseUrl="https://demos.telerik.com/kendo-ui/service/Northwind.svc/">
                    <Select Url="Employees/?inlinecount=allpages&%24select=EmployeeID%2CLastName%2CFirstName%2CReportsTo" DataType="JSON" />
                </WebServiceDataSourceSettings>
            </DataSource>
            <Schema DataName="d.results">
            </Schema>
        </telerik:RadClientDataSource>
        <div class="demo-container size-thin">
            <telerik:RadDropDownTree RenderMode="Lightweight" ID="RadDropDownTree1" runat="server" DropDownSettings-Height="220px" Width="100%" 
                ClientDataSourceID="RadClientDataSource1" DataTextField="FirstName" DataValueField="LastName" DataFieldID="EmployeeID"
                DataFieldParentID="ReportsTo">
                <DropDownSettings AutoWidth="Enabled"  />
            </telerik:RadDropDownTree>
        </div>
        </form>
    </body>
    </html>

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