I get the following error, when I click on the RadComboBox to get the items :

The target 'ctl00$MainContent$grdAlum&ctl00$ctl05$EditFormControl$cmbUnPrLot' for the callback could not be found or did not implement ICCallbackEventHandler



Here is the relative code.

.aspx
 <telerik:RadScriptManager ID="RadScriptManager1"
    EnablePageMethods="true" runat="server">
    <Services>
      <asp:ServiceReference Path="~/SessionAccessService.asmx" />
    </Services>
  </telerik:RadScriptManager>
  <telerik:RadSkinManager ID="QsfSkinManager" runat="server" ShowChooser="false" />
  <telerik:RadFormDecorator ID="QsfFromDecorator" runat="server" DecoratedControls="All"
    EnableRoundedCorners="false" />
  <telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
  <script type="text/javascript">
...
  </script>

  </telerik:RadCodeBlock>
  <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
    <AjaxSettings>
      <telerik:AjaxSetting AjaxControlID="grdDetails">
        <UpdatedControls>
          <telerik:AjaxUpdatedControl ControlID="grdDetails"
            LoadingPanelID="RadAjaxLoadingPanel1"></telerik:AjaxUpdatedControl>
        </UpdatedControls>
      </telerik:AjaxSetting>
    </AjaxSettings>
  </telerik:RadAjaxManager>

  <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">
  </telerik:RadAjaxLoadingPanel>
    <telerik:RadWindowManager ID="RadWindowManager1" runat="server" EnableShadow="true">
    </telerik:RadWindowManager>

...

          <telerik:RadGrid ID="grdAlum" runat="server"
            Width="550px" Height="200px"
            AllowPaging="True" PageSize="4"
            PagerStyle-PageSizeControlType="None"
            ShowFooter="true"
            PagerStyle-PageButtonCount="4" AutoGenerateColumns="False"
            OnUpdateCommand="grdAlum_UpdateCommand"
            OnItemDataBound="grdAlum_ItemDataBound"
            OnNeedDataSource="grdAlum_NeedDataSource"
            AllowAutomaticInserts="false"
            ShowStatusBar="false" Skin="Vista">

            <MasterTableView Width="100%" CommandItemDisplay="none"
              DataKeyNames="ODUA_ID, ODUA_Itm_ID, ODUA_Lot_ID"
              CommandItemSettings-AddNewRecordText="" AllowSorting="False"
              CommandItemSettings-ShowRefreshButton="False"
              CommandItemSettings-AddNewRecordImageUrl=""
              CommandItemStyle-HorizontalAlign="center"
              CommandItemStyle-BorderStyle="None">

              <EditFormSettings UserControlName="OrderAlum.ascx"
                EditFormType="WebUserControl">
                <EditColumn ButtonType="ImageButton" />
                <PopUpSettings Width="550px" Modal="true" />
              </EditFormSettings>

              <Columns>
...
            </Columns>
            </MasterTableView>
            <ClientSettings Selecting-AllowRowSelect="true" EnableRowHoverStyle="true">
              <Scrolling AllowScroll="True" UseStaticHeaders="True"
                SaveScrollPosition="true"></Scrolling>
              <ClientEvents OnRowDblClick="RowDblClick" OnRowClick="RowClick" />
            </ClientSettings>
          </telerik:RadGrid>


OrderAlum.ascx
<%@ Control Language="VB" AutoEventWireup="false" CodeFile="OrderAlum.ascx.vb"
  Inherits="EditFormOrderAlum.OrderAlum" %>

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

<telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="false" />
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
</telerik:RadAjaxManager>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">
</telerik:RadAjaxLoadingPanel>


<telerik:RadWindowManager ID="RadWindowManager1" runat="server" EnableShadow="true">
</telerik:RadWindowManager>

<asp:Table.......

<telerik:RadComboBox runat="server" ID="cmbUnPrLot"
        Height="190px" Width="320px" Skin="Vista"
        EnableLoadOnDemand="true" ItemsPerRequest="5"
        DataTextField="Lot_Number" DataValueField="Inv_ID" 
        HighlightTemplatedItems="true" ExpandDelay="0"
        ExpandAnimation-Duration="0" CollapseAnimation-Duration="0"
        CollapseDelay="0" LoadingMessage="Loading ..." 
        OnItemsRequested="cmbUnPrLot_ItemsRequested">
      </telerik:RadComboBox>


OrderAlum.ascx.vb

Imports System.Data.SqlClient
Imports System
Imports System.Data
Imports System.Collections
Imports System.Web.UI
Imports Telerik.Web.UI

Namespace EditFormOrderAlum

  Class OrderAlum
    Inherits System.Web.UI.UserControl
    Implements INamingContainer

    Private _dataItem As Object = Nothing

#Region "Web Form Designer generated code"

    Protected Overrides Sub OnInit(ByVal e As EventArgs)
      InitializeComponent()
      MyBase.OnInit(e)
    End Sub

    Private Sub InitializeComponent()
      AddHandler DataBinding, AddressOf Me.OrderAlum_DataBinding
    End Sub

#End Region

    Protected Sub Page_Load(sender As Object, e As EventArgs)
    End Sub

    Public Property DataItem() As Object
      Get
        Return Me._dataItem
      End Get
      Set(ByVal value As Object)
        Me._dataItem = value
      End Set
    End Property

    Protected Sub cmbUnPrLot_ItemsRequested(ByVal sender As Object, ByVal e As RadComboBoxItemsRequestedEventArgs)
      Dim SQLSelectCommand As SqlCommand
      Dim SQLDBConnString As String = ConfigurationManager.ConnectionStrings("NewERPConnectionString").ToString()
      Dim SQLDBConn As New SqlConnection(SQLDBConnString)
      SQLDBConn.Open()
      SQLSelectCommand = New SqlCommand("dbo.spGetUnPrAlumLots", SQLDBConn)
      SQLSelectCommand.CommandType = CommandType.StoredProcedure
      SQLSelectCommand.Parameters.AddWithValue("@Lot_Itm_ID", ddlUnPrItemCode.SelectedValue.ToString)
      Dim dt As New DataTable()
      Dim adp As New SqlDataAdapter
      adp.SelectCommand = SQLSelectCommand
      adp.Fill(dt)

      For Each dataRow As DataRow In dt.Rows
        Dim item As New RadComboBoxItem()
        item.Text = DirectCast(dataRow("Lot_Number"), String)
        item.Value = dataRow("Inv_ID").ToString()
        Dim InvQty As Decimal = DirectCast(dataRow("Inv_Quantity"), Decimal)
        Dim InvLoc As Long = DirectCast(dataRow("Inv_Lov_ID"), Long)
        item.Attributes.Add("Inv_Quantity", InvQty.ToString())
        item.Attributes.Add("Inv_Lov_ID", InvLoc.ToString())
        '        item.Value += ":" + unitPrice.ToString()
        cmbUnPrLot.Items.Add(item)
        item.DataBind()
      Next
    End Sub

    Protected Sub OrderAlum_DataBinding(ByVal sender As Object, ByVal e As System.EventArgs)
......


I would appreciate any help - Thanks

This is a simple use of RadMediaPlayer and I'm totally confused why it doesn't work:

        <telerik:RadMediaPlayer id="rmpMediafiles" runat="server">
        </telerik:RadMediaPlayer>

This is my JavaScript function that sets the Media Player's source:

function OpenMediaModal(MediaPath)
{
var rmpMediafiles = $find('<%=rmpMediafiles.ClientID %>');
rmpMediafiles.set_source(MediaPath);
}

It gives me error that this object has no method 'set_source'. I can not find my problem here!

I using RadAsyncUpload control and upload file by automatic after select file in "choose file to upload" dialog or drag and drop files to drop zone. I found file name at target folder not same original file name or cannot read.
Sample see attached image. Original file name is "SelfUpdatingLauncher.zip but in target folder is "1426758505493SelfUpdatingLauncher.zip".
Please advice.

Hello All,

Presently I am having a telerik radgrid with a commanditem template above the grid header for some extra  information.But the problem is that while exporting to CSV , the header information inside the commandItem template is not being exported.However the export is working just fine with PDF and Excel .Here is the code I am using.


 <telerik:RadGrid ID="ModifiedContentsReportGrid" runat="server" AutoGenerateColumns="false"
                AllowSorting="true" AllowPaging="true" EnableOutsideScripts="true" PagerStyle-Mode="NextPrevAndNumeric"
                ShowFooter="true" OnItemCreated="ModifiedContentsReportsGrid_OnItemCreated" Title="Modified Content Report"
                Height="100%" ExportSettings-ExportOnlyData="false" 
                EnableViewState="true">
                <ItemStyle BackColor="transparent" />
                <AlternatingItemStyle BackColor="#F9F9F9" />
                <ExportSettings OpenInNewWindow="true" FileName="Modified Content Report" ExportOnlyData="false" >
                    <Pdf PaperSize="A4" AllowPrinting="true" PageBottomMargin="10px" PageTopMargin="25px"
                        PageHeaderMargin="0px" PageLeftMargin="10px" PageRightMargin="10px" PageTitle="Modified Content Report" />
                </ExportSettings>
                <HeaderStyle HorizontalAlign="Center" />
                <ClientSettings>
                    <Scrolling UseStaticHeaders="true" />
                </ClientSettings>
                <MasterTableView Width="100%" CommandItemDisplay="Top" CommandItemStyle-HorizontalAlign="Right"
                    TableLayout="Fixed">
                    <CommandItemTemplate>
                        <asp:Literal runat="server"><b>Account Name :</b></asp:Literal>
                        <asp:Label ID="lblClientName" runat="server" /><br />
                        <asp:Literal runat="server"><b>Report generated on :</b></asp:Literal>
                        <asp:Label ID="lblGenerateDate" runat="server" /><br />
                        <asp:Literal runat="server"><b>Date Range :</b></asp:Literal>
                        <asp:Label ID="lblDateRange" runat="server" />
                    </CommandItemTemplate>
                    <Columns>
                        <telerik:GridBoundColumn DataField="Name" SortExpression="Name" HeaderText="Content File"
                             SortAscImageUrl="/Images/SortAsc.gif" SortDescImageUrl="/Images/SortDesc.gif"
                            ItemStyle-Width="30%">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="Location" SortExpression="Location" HeaderText="Location"
                            SortAscImageUrl="/Images/SortAsc.gif" SortDescImageUrl="/Images/SortDesc.gif"
                            ItemStyle-Width="30%">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="Project/Folder" SortExpression="Project/Folder"
                            HeaderText="Project/Folder" SortAscImageUrl="/Images/SortAsc.gif" SortDescImageUrl="/Images/SortDesc.gif"
                            ItemStyle-Width="10%">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="Document" SortExpression="Document" HeaderText="Document"
                            SortAscImageUrl="/Images/SortAsc.gif" SortDescImageUrl="/Images/SortDesc.gif"
                            ItemStyle-Width="10%">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="Section" SortExpression="Section" HeaderText="Section"
                            SortAscImageUrl="/Images/SortAsc.gif" SortDescImageUrl="/Images/SortDesc.gif"
                            ItemStyle-Width="10%">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="JobNumber" SortExpression="JobNumber" HeaderText="Job Number"
                            SortAscImageUrl="/Images/SortAsc.gif" SortDescImageUrl="/Images/SortDesc.gif"
                            ItemStyle-Width="10%">
                        </telerik:GridBoundColumn>
                    </Columns>
                    <NoRecordsTemplate>
                        <asp:Literal runat="server">
                    No records to display.</asp:Literal>
                    </NoRecordsTemplate>
                </MasterTableView>
                <PagerStyle Mode="NextPrevAndNumeric" />
            </telerik:RadGrid>

Can anyone provide some some inputs or solution to this problem?

I have form designer that allows users to create any form they want the will then be used as a member form.  The member form is then used to join a group.  All this is working fine (except for a problem with RadDropDownList) and I have many members in the test database.  I now wish to use the grid to display the users in a group member list for member management.

The problem I cannot solve is how to create the source with data for the grid.  Every example I can find seems to know all its columns in advance.  I actually do not know any of my columns in advance.  I have a list of form rows that each have a name with a type and the ability to populate instances of the list. 

I would also like to create a column selector. I wonder if there are any examples of that around.

Thanks,
George

I am getting this exception intermittently when binding a RadListView. I create a data table, fill it with some data, assign it as the data source, and then do a data bind. I know the code always returns a data table, even if it is empty, so this error can't be caused by a null data source. Could it be caused by something else, maybe one of the fields in the item template?

Here's the stack trace:
at Telerik.Web.UI.ListViewNullEnumerable.get_DataSourceCount() 
at Telerik.Web.UI.RadListView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) 
at Telerik.Web.UI.RadListView.PerformDataBinding(IEnumerable data) 
at System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) 
at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) 
at System.Web.UI.WebControls.DataBoundControl.PerformSelect() at Telerik.Web.UI.RadListView.PerformSelect() 
at System.Web.UI.WebControls.BaseDataBoundControl.DataBind() at Telerik.Web.UI.RadListView.DataBind() 

Here's my HTML code:

I have 2 levels TabStrip.
Last item on 1st level is Help

                <telerik:RadTab Text="Help" NavigateUrl="http://www.google.com" Target="_blank">
                </telerik:RadTab>

I want to user stay on current tabs when he/she clicks "Help" tab. 
Currently browser opens new window but selects Help empty page. 

Could you guide me how to achieve that behavior.

thanks.

I'm trying to personalize the clienttemplate, formatting numbers, and putting percentage

For a stacked 100% bar chart I have the following:


It works perfectly, but I want to display only three decimals for categoryValue.

If I try to add kendo.format(...), as I see in some example online, the chart is not shown anymore...

I'd like to show also the percentage of category value (the chart is a stack100 type)

Hello,

I am working on a project that uses RadControls for "ASP.NET AJAX Q2 2009 SP1" and I would like to upgrade to the latest version of "UI for ASP.NET AJAX" which my company has just purchased.

As the two versions are so far apart can anyone tell me of any pitfalls I may encounter?

Should I just setup a test development environment and "suck it and see"??

Thanks,

Mark.

In a fairly narrow RadGrid, PagerStyle is set to Slider, but the slider bar is so wide that when you go to a new page, the Page X of Y label overwrites the Items X to Y of Z label. 

How can the width of the slider bar be defined so as to prevent this?  I was able to programmatically set it via some JavaScript, but the amount the selector moves per page is off and when you get to Page Y of Y, it still overwrites the Next Page button

The basic issue is in the attached image