Questions on UI for ASP.NET AJAX Forum

1 answer

216 views

I have two RadDateTimePickers embedded in a DetailsView. The problem is that when I run the page, the picker for RadDatePickerStarts inputs the date&time in the text box for the second picker (RadDatePickerEnds). The second picker does not input the selected date&time anywhere. How do I get each picker to place input into the correct box?

  <asp:TemplateField HeaderText="Starts" SortExpression="Starts">
                    <EditItemTemplate>
                        <telerik:RadDateTimePicker ClientIDMode="Static" SelectedDate='<%# Bind("Starts") %>'
                            ID="RadDatePickerStarts" runat="server">
                        </telerik:RadDateTimePicker>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <telerik:RadDateTimePicker ClientIDMode="Static" SelectedDate='<%# Bind("Starts") %>'
                            ID="RadDatePickerStarts" runat="server">
                        </telerik:RadDateTimePicker>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <telerik:RadDateTimePicker ClientIDMode="Static" SelectedDate='<%# Bind("Starts") %>'
                            ID="RadDatePickerStarts" runat="server">
                        </telerik:RadDateTimePicker>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Ends" SortExpression="Ends">
                    <EditItemTemplate>
                        <telerik:RadDateTimePicker ClientIDMode="Static" SelectedDate='<%# Bind("Ends") %>'
                            ID="RadDatePickerEnds" runat="server">
                        </telerik:RadDateTimePicker>
                        <asp:CompareValidator ID="CompareValidator1" runat="Server" ControlToCompare="RadDatePickerStarts"
                            ControlToValidate="RadDatePickerEnds" Operator="GreaterThan" ErrorMessage="Date range is not valid "
                            Display="Dynamic" />
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <telerik:RadDateTimePicker ClientIDMode="Static" SelectedDate='<%# Bind("Ends") %>'
                            ID="RadDatePickerEnds" runat="server">
                        </telerik:RadDateTimePicker>
                        <asp:CompareValidator ID="CompareValidator1" runat="Server" ControlToCompare="RadDatePickerStarts"
                            ControlToValidate="RadDatePickerEnds" Operator="GreaterThan" ErrorMessage="Date range is not valid "
                            Display="Dynamic" />
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <telerik:RadDateTimePicker ClientIDMode="Static" SelectedDate='<%# Bind("Ends") %>'
                            ID="RadDatePickerEnds" runat="server">
                        </telerik:RadDateTimePicker>
                    </ItemTemplate>
                </asp:TemplateField>

Calendar

answered on 04 Jan 2012

2 answers

114 views

RadDateTimePicker: culture is ignored

I have the following code:

void Application_BeginRequest(object sender, EventArgs e)

{

var culture = Culture.GetBrowserOrDefaultCulture();

culture.DateTimeFormat.ShortTimePattern = "HH:mm:ss";

culture.DateTimeFormat.LongTimePattern = "HH:mm:ss";

Thread.CurrentThread.CurrentCulture = culture;

Thread.CurrentThread.CurrentUICulture = culture;

}

For instance, I set US culture in my browser. Everything changes accordingly in my page output.
However, RadDateTimePicker keeps showing datetime in some specific - I guess, OS-defined, format and does not care this setting.

How to fix this?

I just want it to pick up the culture, set for the thread - I don't want to write special code for every RadDateTimePicker on my pages - I have tons of them!

Calendar

answered on 04 Jan 2012

0 answers

121 views

UpdatePanel and RadNumericTextBox issue

Hi!,
Here it is, my very 1st thread :D. so be patient please lol...(i´m not very good at english either so...)

ok....i have a form with a RadGrid in it...wich i´m using as a control (ascx2)..called from another page(ascx1).
when i use <UpdatePanel> in ascx1, RadNumericTextBox contents in ascx2, let users imput alphanumeric characters beside numbers..i realized that about 2 seconds later, the RadNumericTextBox clean data leaving numbers only...but i would like to know if is there any way to show warning icon, just like RadNumericTextBox works normally..
here's the code:

ascx1:

<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>

<%@ Assembly Name="Microsoft.Web.CommandUI, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register Tagprefix="asp" Namespace="System.Web.UI" Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>

<%@ Import Namespace="Microsoft.SharePoint" %>

<%@ Register Tagprefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Control Language="VB" AutoEventWireup="true" CodeBehind="ReceptionsUserControl.ascx.vb" Inherits="TelerikTests.ReceptionsUserControl" %>

<%@ Register Assembly="Telerik.Web.UI, Version=2010.3.1109.35, Culture=neutral, PublicKeyToken=121fae78165ba3d4"

Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<asp:UpdatePanel ID="pnl_Receptions" runat="server" >

<ContentTemplate>

<telerik:RadGrid ID="tlk_Grid" OnNeedDataSource="tlk_Grid_NeedDataSource" AllowSorting="True" PageSize="15"

AllowPaging="True" runat="server" AutoGenerateColumns="false" Skin="Sunset" AllowMultiRowSelection="false" >

<PagerStyle Mode="NextPrevAndNumeric" />

<MasterTableView Width="100%" DataKeyNames="OrderNumber" >

<Columns>

<telerik:GridBoundColumn DataField="OrderNumber" HeaderText="N° Pedido" />

<telerik:GridBoundColumn DataField="OrderDescription" HeaderText="Descripción" />

<telerik:GridBoundColumn DataField="WareHouseFrom" HeaderText="Almacén Emisor" />

<telerik:GridBoundColumn DataField="DeliveredDate" HeaderText="Fecha Entrega" />

<telerik:GridBoundColumn DataField="OrderSenderfullname" HeaderText="Autorizado Por" />

<telerik:GridEditCommandColumn HeaderText="Recibir" ButtonType="ImageButton" />

</Columns>

<PagerStyle Mode="NextPrevAndNumeric" />

<EditFormSettings EditFormType="WebUserControl" UserControlName="~/_ControlTemplates/CtrlTlkGridDetail.ascx" />

</MasterTableView>

<ClientSettings Selecting-AllowRowSelect="true" EnableRowHoverStyle="true" />

</telerik:RadGrid>

</ContentTemplate>

</asp:UpdatePanel>

ascx2:

<table width="50%" style="position: relative; margin-left: 234px;">

<tr>

<td colspan="2" style="text-align: center">

<telerik:RadGrid ID="tlk_GridDetail" runat="server" Width="100%" AllowFilteringByColumn="True"

AutoGenerateColumns="false" Skin="Sunset" AllowPaging="true" PageSize="8">

<MasterTableView CommandItemDisplay="None" AllowFilteringByColumn="false" DataKeyNames="strProductCode"

Width="100%" PagerStyle-AlwaysVisible="true">

<Columns>

<telerik:GridBoundColumn UniqueName="strProductCode" DataField="strProductCode" HeaderText="Cod. Artículo"

FilterControlWidth="25%" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="Left" />

<telerik:GridBoundColumn UniqueName="strProductName" DataField="strProductName" HeaderText="Descripción"

FilterControlWidth="25%" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="Left" />

<telerik:GridNumericColumn UniqueName="dblSentQuantity" DataField="dblSentQuantity"

HeaderText="Cant. Solicitada" FilterControlWidth="25%" HeaderStyle-HorizontalAlign="Right"

ItemStyle-HorizontalAlign="right" NumericType="Number" DataFormatString="{0:N}" />

<telerik:GridTemplateColumn UniqueName="strReceivedQuantity" HeaderText="Cant. Recibida"

ItemStyle-Width="25%" HeaderStyle-HorizontalAlign="Right" ItemStyle-HorizontalAlign="right">

<ItemTemplate>

<telerik:RadNumericTextBox ID="txt_ReceivedQuantity" runat="server" Value='<%# DataBinder.Eval( Container.DataItem, "dblSentQuantity" ) %>'>

</telerik:RadNumericTextBox>

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

<PagerStyle Mode="NumericPages" />

</MasterTableView>

<ClientSettings Selecting-AllowRowSelect="true" EnablePostBackOnRowClick="true">

</ClientSettings>

</telerik:RadGrid>

</td>

</tr>

<tr>

<td><br />

<div class="RadGrid_Sunset" style="width: 100%">

<table class="RadGrid_WebBlue rgMasterTable" cellspacing="0" style="width: 100%">

<tr>

<th class="RadGrid_Sunset rgHeader" colspan="2">

Resumen Orden Nro:

<label id="lbl_OrderNumber" runat="server"></label>

</th>

</tr>

<tr class="RadGrid_Sunset rgRow">

<td>

Condiciones Higiénicas de la Cava:

</td>

<td>

<asp:DropDownList ID="ddl_WHTrailerConditions" runat="server" Width="62%">

<asp:ListItem Text="Buena" Value="0"></asp:ListItem>

<asp:ListItem Text="Regular" Value="1"></asp:ListItem>

<asp:ListItem Text="Mala" Value="2"></asp:ListItem>

</asp:DropDownList>

</td>

</tr>

<tr class="RadGrid_Sunset rgAltRow" >

<td>

Estado del Termoking

</td>

<td>

<asp:DropDownList ID="ddl_TermokingSatus" runat="server" Width="62%">

<asp:ListItem Text="Prendido" Value="0"></asp:ListItem>

<asp:ListItem Text="Apagado" Value="1"></asp:ListItem>

</asp:DropDownList>

</td>

</tr>

<tr class="RadGrid_Sunset rgAltRow">

<td>

Temp. Registrada en el Termoking:

</td>

<td>

<telerik:RadNumericTextBox ID="txt_TermokingTemperature" runat="server" NumericType="Number" EnabledStyle-HorizontalAlign="Right" />

°F

</td>

</tr>

<tr class="RadGrid_Sunset rgAltRow">

<td>

Temp. Registrada en el Producto Recibido:

</td>

<td>

<telerik:RadNumericTextBox ID="txt_ReceivedProduct" runat="server" NumericType="Number" EnabledStyle-HorizontalAlign="Right" />

°F

</td>

</tr>

</table>

</div>

</td>

</tr>

<tr>

<td colspan="2" style="text-align: center"><br />

<asp:ImageButton ID="btnAceptar" runat="server" CommandName="PerformInsert" ImageUrl="~/_layouts/images/done.png"

Width="24px" />

<asp:ImageButton ID="btnCancelar" runat="server" CommandName="Cancel" ImageUrl="~/_layouts/images/cancel.png"

Width="24px" />

</td>

</tr>

</table>

THANKSSSSS!!!!

General Discussions

asked on 04 Jan 2012

3 answers

156 views

RadEditor Issue in SharePoint Alerts

Hi we noticed an issue that we think has to do with the implementation of RadEditor Light. The issue has to do with Alerts on lists and what that content contains when alerts are sent.
When a list item is modified the expected behaviour is that subsequent alerts will let you know what was changed and what wasn't changed. please view this link for the screen shot..

screen shot 1

You will notice that "Notes" was changed and thus you get the line across the old content + the new content. The other columns such as Details (which at this time is using regular SharePoint Rich Text Editor) does not show anything, because nothing has changed.

upon changing the rich text editor to a Moss Radeditor Light,
screen shot 2
You can see that we're not changing anything , and that it is indeed using a rad editor. When we hit ok, and email gets sent that has this unexpected behaviour

unexpected behaviour

as you can see, even if we dont' make any modifications, the fields that use rad editor light will always have the "edited" tag as well as the line across the old text. This seems like bug to me, and I want to know how and if there is a fix for this issue... thanks

Charles

WebParts for SharePoint

answered on 04 Jan 2012

1 answer

148 views

RadMenu OnClientItemClicked on Firefox doesn't work

I'm experiencing the following issue on a very simple and basic code:
The radmenu OnClientItemClicked is not fired only on firefox (ver.7)
On all the other browser it's working as expected.

the RadMenu is empty and the items are added in code-behind:

RadMenuItem rmiItem = new RadMenuItem();

rmiItem .Text = "Menu Voice Text";

rmiItem .Value = "http://www.someurl.com";

//rmiItem .NavigateUrl = "#";

rmMainMenu.Items.Add(rmiItem );

and here is the radmenu in the aspx page:

<telerik:RadMenu ID="rmMainMenu" runat="server" Skin="Office2007" OnClientItemClicked="OnClientItemClicked" Width="100%">

<Items>

</Items>

</telerik:RadMenu>

once the user click over the menu item the following javascript is executed:

<script type="text/javascript">

function OnClientItemClicked(sender, eventArgs) {

var item = eventArgs.get_item();

submitTo(item.get_value());

}

function submitTo(url) {

form2.action = url;

form2.submit();

}

</script>

In IE7, IE8, Chrome and Safari, everything works as expected and the user is redirected to the page specified in the Value attribute of the RadMenu.
Only in Firefox, instead it does nothing, except that putting a # at the end of the URL (is not a postback)

Please note that this code is used to perform a POST submit of data to a different URL so, for this reason I haven't used the property NavigateURL.
In any case it works in the other browser so it's something wrong with RadMenu and Firefox.

Any help is appreciated.
Thanks
Marco

Menu

answered on 04 Jan 2012

2 answers

167 views

RadUpload not finding files with Radajaxmanager

Hello
I have a radupload inside radgrid as an itemtemplate. The uploader is used to save icon image in database along with other details. The grid has a checkbox whose autopostback is set on for checking checkChanged event accordingly. I have used radajaxmanager so that the page doesnot post back. But i face a problem when i try to save the uploaded image icon using radtoolbarbutton. Uploaded file show 0 count when i try to save the same as the page post back and there is no file to save. I have also added a client side function for disabling ajax on its clientclick of radtoolbarbutton but it results in an error of "Object doesn't support property or method 'set_enableAjax'". Please help me in achieving the required target without any code compromises.
Thanks in advance.

Upload (Obsolete)

answered on 04 Jan 2012

3 answers

139 views

Manual grid editing error

I get the following error when trying to insert a record ...Unable to cast object of type 'Telerik.Web.UI.GridCommandItem' to type 'Telerik.Web.UI.GridEditFormInsertItem'. I have followed the examples, what am I missing here?

Private Sub grdLogins_DeleteCommand(sender As Object, e As Telerik.Web.UI.GridCommandEventArgs) Handles grdLogins.DeleteCommand
    Dim item As GridDataItem = DirectCast(e.Item, GridDataItem)
    Dim LoginID As Integer = CInt(item.OwnerTableView.DataKeyValues(item.ItemIndex)("LoginKey").ToString)
    gUserData.DeleteUserNTCredential(LoginID)
    grdLogins.Rebind()
End Sub
 
Private Sub grdLogins_InsertCommand(sender As Object, e As Telerik.Web.UI.GridCommandEventArgs) Handles grdLogins.InsertCommand
    Dim insertedItem As GridEditFormInsertItem = DirectCast(e.Item, GridEditFormInsertItem)
    Dim UserID As Integer = GetSelectedUser()
    Dim Login As String = (TryCast(insertedItem("NTLogin").Controls(0), TextBox)).Text
    gUserData.AddUserNTCredential(UserTree.SelectedValue, Login, GetEditorInfo)
    grdLogins.Rebind()
End Sub
 
Private Sub grdLogins_UpdateCommand(sender As Object, e As Telerik.Web.UI.GridCommandEventArgs) Handles grdLogins.UpdateCommand
    Dim editedItem As GridEditableItem = TryCast(e.Item, GridEditableItem)
    Dim LoginID As Integer = CInt(editedItem.OwnerTableView.DataKeyValues(editedItem.ItemIndex)("LoginKey").ToString)
    Dim Login As String = (TryCast(editedItem("NTLogin").Controls(0), TextBox)).Text
    Dim UserID As Integer = CInt(GetSelectedUser())
    gUserData.UpdateUserNTCredential(UserID, LoginID, Login, GetEditorInfo)
    grdLogins.Rebind()
End Sub
 
Private Sub grdLogins_NeedDataSource(sender As Object, e As Telerik.Web.UI.GridNeedDataSourceEventArgs) Handles grdLogins.NeedDataSource
    Dim UserID As Integer
    If GetSelectedUser() Then
        UserID = GetSelectedUser()
    Else
        UserID = 0
    End If
    grdLogins.DataSource = gUserData.SelectUserNTCredentialsAll(UserID)
End Sub

<telerik:RadGrid ID="grdLogins" runat="server" Skin="Office2010Blue"
                     AutoGenerateColumns="False" CellSpacing="0" GridLines="None" AllowPaging="True"
                     PageSize="5">
                 <ClientSettings>
                     <Selecting AllowRowSelect="True" />
                 </ClientSettings>
                 <MasterTableView DataKeyNames="LoginID"
                     CommandItemDisplay="Top" EditMode="InPlace">
                     <NoRecordsTemplate>
                         No Records to display.
                     </NoRecordsTemplate>
                     <CommandItemSettings ExportToPdfText="Export to PDF" />
                     <RowIndicatorColumn FilterControlAltText="Filter RowIndicator column"
                         Visible="True">
                         <HeaderStyle Width="20px" />
                     </RowIndicatorColumn>
                     <ExpandCollapseColumn FilterControlAltText="Filter ExpandColumn column"
                         Visible="True">
                         <HeaderStyle Width="20px" />
                     </ExpandCollapseColumn>
                     <Columns>
                         <telerik:GridBoundColumn DataField="LoginID"
                             FilterControlAltText="Filter LoginID column" UniqueName="LoginID"
                             Visible="False" Display="False" ReadOnly="True">
                         </telerik:GridBoundColumn>
                         <telerik:GridBoundColumn DataField="NTLogin"
                             FilterControlAltText="Filter NTLogin column" HeaderText="NT Login"
                             UniqueName="NTLogin">
                         </telerik:GridBoundColumn>
                         <telerik:GridBoundColumn DataField="CreateDate" Display="False"
                             FilterControlAltText="Filter CreateDate column" HeaderText="Date Added"
                             UniqueName="CreateDate" Visible="False">
                         </telerik:GridBoundColumn>
                         <telerik:GridBoundColumn DataField="CreateBy"
                             FilterControlAltText="Filter CreateBy column" UniqueName="CreateBy"
                             Visible="False">
                         </telerik:GridBoundColumn>
                         <telerik:GridBoundColumn DataField="UpdateDate"
                             FilterControlAltText="Filter UpdateDate column" UniqueName="UpdateDate"
                             Visible="False">
                         </telerik:GridBoundColumn>
                         <telerik:GridBoundColumn DataField="UpdateBy"
                             FilterControlAltText="Filter UpdateBy column" UniqueName="UpdateBy"
                             Visible="False">
                         </telerik:GridBoundColumn>
                     </Columns>
                     <EditFormSettings>
                         <EditColumn FilterControlAltText="Filter EditCommandColumn column">
                         </EditColumn>
                     </EditFormSettings>
                     <CommandItemTemplate>
                         <telerik:RadToolBar ID="RadToolBar1" Runat="server" Width="100%" Skin="Office2010Blue"
                         onbuttonclick="RadToolBar1_ButtonClick" EnableRoundedCorners="True">
                         <items>
             <telerik:RadToolBarButton runat="server" CommandName="InitInsert" ImageUrl="~/Images/add2.png"
                 Visible='<%# Not grdLogins.MasterTableView.IsItemInserted %>' Owner="RadToolBar1"
                 Text="Add New">
             </telerik:RadToolBarButton>
             <telerik:RadToolBarButton runat="server" CommandName="EditSelected" ImageUrl="~/Images/edit.png"
                 Owner="RadToolBar1" Text="Edit Selected" Visible='<%# grdLogins.EditIndexes.Count = 0 %>'>
             </telerik:RadToolBarButton>
             <telerik:RadToolBarButton runat="server" CommandName="UpdateEdited" ImageUrl="~/Images/check2.png"
                 Text="Update Edit" Visible='<%# grdLogins.EditIndexes.Count > 0 %>'>
             </telerik:RadToolBarButton>
             <telerik:RadToolBarButton runat="server" CommandName="CancelAll" ImageUrl="~/Images/undo.png"
                 Text="Cancel" Visible='<%# grdLogins.EditIndexes.Count > 0 or grdLogins.MasterTableView.IsItemInserted %>'>
             </telerik:RadToolBarButton>
             <telerik:RadToolBarButton runat="server" CommandName="PerformInsert" ImageUrl="~/Images/redo.png"
                 Text="Commit Insert" Visible='<%# grdLogins.MasterTableView.IsItemInserted%>'>
             </telerik:RadToolBarButton>
             <telerik:RadToolBarButton runat="server" CommandName="DeleteSelected" ImageUrl="~/Images/delete2.png"
                 Owner="RadToolBar1" Text="Delete Selected">
             </telerik:RadToolBarButton>
             <telerik:RadToolBarButton runat="server" IsSeparator="True" Text="Sep3">
             </telerik:RadToolBarButton>
             <telerik:RadToolBarButton runat="server" CommandName="RebindGrid" ImageUrl="~/Images/refresh.png"
                 Text="Refresh">
             </telerik:RadToolBarButton>
         </items>
                         </telerik:RadToolBar>
                         </CommandItemTemplate>
                 </MasterTableView>
                 <PagerStyle PageButtonCount="5" />
                 <FilterMenu EnableImageSprites="False">
                     <WebServiceSettings>
                         <ODataSettings InitialContainerName="">
                         </ODataSettings>
                     </WebServiceSettings>
                 </FilterMenu>
                 <HeaderContextMenu CssClass="GridContextMenu GridContextMenu_Office2010Blue">
                     <WebServiceSettings>
                         <ODataSettings InitialContainerName="">
                         </ODataSettings>
                     </WebServiceSettings>
                 </HeaderContextMenu>
                 </telerik:RadGrid>

Grid

answered on 04 Jan 2012

4 answers

211 views

[Solved] radTreeView inside a PopUp

Hi Admin,

I have asp.net page. In that one label\link is there. Once the link is clicked, a popup would appear. I want a radTreeView inside it, containing details from database.
My question is:- 'How to generate a RadTreeView inside a PopUp, when a link is clicked'

Please see the attached image, for the requirement.

Regards,
Sourav

TreeView

answered on 04 Jan 2012

2 answers

105 views

[Solved] Latest version displays EmptyMessage instead of selected item

Hello,
I have a simple RadComboBox that when an item is selected it redirects the page back to itself and is supposed to display the item that was selected in the RCB.
This was working with Web.UI version 2010.3.1109.40, but it broke after upgrading to version 2011.3.1115.40.

With the latest version it will reload the page, but will display the "EmptyMessage" text instead of the selected text.

Here's my page:

<%@ Page Title="Home Page" Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb"

Inherits="RadComboBoxBug._Default" %>

<!DOCTYPE HTML />

<%@ Register TagPrefix="telerik" Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" %>

<html>

<head id="Head1" runat="server">

<title>RadComboBox Issues</title>

<link href="~/Styles/Site.css" rel="stylesheet" type="text/css" />

</head>

<body>

<form id="Form1" runat="server">

<telerik:RadScriptManager ID="RadScriptManager1" runat="server" />

<div class="page">

<div class="main">

<div style="margin: 10px; border: 1px solid #CCC; padding: 10px;">

<telerik:RadComboBox ID="RadComboBox2" runat="server" EnableLoadOnDemand="true" EmptyMessage="Select a Person"

AppendDataBoundItems="false" AutoPostBack="true" DataValueField="RecordID" DataTextField="Name"

ShowMoreResultsBox="true" EnableVirtualScrolling="false" MarkFirstMatch="true"

CausesValidation="False" OnClientDropDownOpening="onDropDownOpening" />

<asp:Label ID="lbl_SelectedPerson" runat="server" Style="margin-left: 15px" />

</div>

</form>

</body>

<script type="text/javascript">

function onDropDownOpening(sender) {

var attributes = sender.get_attributes();

if (attributes.getAttribute("DefaultItem") === "true") {

sender.requestItems("", false);

attributes.setAttribute("DefaultItem", "false");

}

</script>

</html>

...and the it's code-behind:

Imports Telerik.Web.UI

Public Class _Default

Inherits Page

Private Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load

If IsPostBack = False Then

Dim personID As String = Request.QueryString("PID")

If personID IsNot Nothing Then

RadComboBox2.SelectedValue = personID

RadComboBox2.Attributes.Add("DefaultItem", "true")

RadComboBox2.Items.Add(New RadComboBoxItem(String.Format("Person {0}", personID), CStr(personID)))

End If

End Sub

Private Sub Page_PreRender(sender As Object, e As System.EventArgs) Handles Me.PreRender

lbl_SelectedPerson.Text = String.Format("Selected Item: {0}", RadComboBox2.SelectedValue)

End Sub

Private Sub RadComboBox2_ItemsRequested(sender As Object, e As RadComboBoxItemsRequestedEventArgs) Handles RadComboBox2.ItemsRequested

RadComboBox2.DataSource = GetPeople()

RadComboBox2.DataBind()

e.EndOfItems = True

End Sub

Private Sub RadComboBox2_SelectedIndexChanged(sender As Object, e As RadComboBoxSelectedIndexChangedEventArgs) Handles RadComboBox2.SelectedIndexChanged

Response.Redirect(String.Format("/Default.aspx?PID={0}", e.Value))

End Sub

Private Function GetPeople() As List(Of Person)

Dim theList As New List(Of Person)

For i As Integer = 1 To 100

theList.Add(New Person() With {.RecordID = i, .Name = String.Format("Person {0}", i)})

Next

Return theList

End Function

Public Structure Person

Public Property RecordID As Integer

Public Property Name As String