or

<telerik:RadScheduler ID="RadScheduler1" runat="server" Height="800px">
</telerik:RadScheduler>
RadScheduler1.Provider =
New ExchangeSchedulerProvider(https://XXXXXX/EWS/Exchange.asmx, "XXXX", "XXXXX", "DOMAIN")
<telerik:GridTemplateColumn HeaderText="Employee Type" DataType="System.String" > <ItemTemplate> <telerik:RadComboBox ID="uxEmployeeType" runat="server" Width="50px" DataTextField="Name" DataValueField="ID" EnableAutomaticLoadOnDemand="true" OnItemsRequested="uxEmployeeType_ItemsRequested" > </telerik:RadComboBox> </ItemTemplate> </telerik:GridTemplateColumn>protected void uxEmployeeType_ItemsRequested(object sender, RadComboBoxItemsRequestedEventArgs e) { RadComboBox uxEmployeeType = (RadComboBox)sender; uxEmployeeType.DataSource = _empTypes.EmployeeTypesMembers; uxEmployeeType.DataBind(); } 