Hi,

I have a page with a repeater inside a Panel. Inside the repeater, there's a radiobuttonlist and depends on what the user clicks, I have to add new rows to the repeater. The problem is I'm getting this error:

Value cannot be null.
Parameter name: page

My aspx page is like this:
 <asp:Panel runat="server" ID="updPnlQuestionnaire">
                    <%--<ContentTemplate>--%>
                         <asp:Repeater ID="rptrQuestion" runat="server" OnItemDataBound="rptrQuestion_OnItemDataBound" OnItemCreated="rptrQuestion_OnItemCreated" ClientIDMode="AutoID">
                                <ItemTemplate>
                                    <table class='questions-table'>
                                            <tr class='datarow'>
                                                <td><asp:Label ID="lblQuestion" Text='<%# Eval("Question") %>' runat="server"></asp:Label>
                                                    <asp:HiddenField ID="hdnQuestionType" runat="server" Value='<%# Eval("QuestionType") %>'/>
                                                    <asp:HiddenField ID="hdnQuestionID" runat="server" Value='<%# Eval("QuestionID") %>'/>
                                                </td>
                                            </tr>
                                     </table>
                                     <table class="questions-table">
                                        <tr class="datarow">
                                            <td>
                                                <asp:RadioButtonList ID="rblListAnswers" runat="server" OnSelectedIndexChanged="rblListAnswers_OnSelectedIndexChanged" AutoPostBack="true"></asp:RadioButtonList>
                                            </td>
                                        </tr>
                                       
                                    </table>
                                
                                </ItemTemplate>
                            </asp:Repeater>
                        
                    </asp:Panel>

While in my Item_Created, I'm adding the ajaxsettings:
 protected void rptrQuestion_OnItemCreated(object sender, RepeaterItemEventArgs e)
        {
            RadioButtonList rblListAnswers = (RadioButtonList)e.Item.FindControl("rblListAnswers");
            var ajaxManager = RadAjaxManager.GetCurrent(this.Page);
                ajaxManager.AjaxSettings.AddAjaxSetting(rblListAnswers, updPnlQuestionnaire);
        }

I've read somewhere that adding ClientIDMode="AutoID" solves this problem, but I'm still having this issue. Even adding the ajaxsettings in OnItemDataBound still gives this error.

Any help would be greatly appreciated. Thanks!

Have an application where a user will step through the wizard like process and when they are satisfied they can click a button to get the results.  I would like for results that will be loaded into a RadGrid to be loaded into the RadWindow.  I have used it where I would open up an external page but this will not load an external page.  How do I get the button to work?

EDIT: Sorry, as I typed this I got the answer...

Hi *,

I have a Webpage that contains a RadOrgChart and RadToolTip-Manager. The Content of the ToolTip is based on the ID given from the RadOrgChart. It works fine until... the session times out.

The Response as soon as the Session times out is:
RadToolTipManager response error: Exception=Sys.WebForms.PageRequestManagerServerErrorException: Value cannot be null. Parameter name: source

I've already added an check that the control should not load then the Value is null.



There are no MS AJAX update panels on the side - I use the RadAjaxManager instead. The GroupItemDataBound-Event is added in the Page_Load and the UserControl loads the Content based on the ID (it loads nothing if no ID is available).
It is no big deal if the Session times out and the ToolTip-Content is not correctly loaded but I need to get rid of the error message and somehow I can't manage that.

Any help would be appreciated. I don't want to hack a 'Session-Keep-alive' or something.

Regards,
Gaby

Hi,

   I am looking for a control like asp:Repeater but with right to left support.

   Currently, in all such controls (Repeater, DataList etc)  the first item comes on the top left, and then on the right side (or first in second row), but i want it to have first item appear on the rop right side and then on the left of it. and so on.

    So basically, it should render items in reverse orders. Is that possible? Does any telerik control support such thing?

     thanks,
     Sameers

Hi,
I tried to use the RadAjaxManager with the wizard control but there are some things I do not really understand.
1. Does the configuration dialog for the AjaxManager only work in the currently selected WizardStep?
2. If you declare some new AjaxSettings for controls in other wizard steps is it possible that those controls are not rendered correctly because the AjaxManager creates Panels around them which do not have the same settings as the controls?

Would help me a lot to know that.

Best regards
Ferdinand

Hi ,
We used radTooltip in Rad Grid ItemTemplate , the issue here if we load more data on grid we are getting below error in IE8 only.
"Stop running the script"
 <telerik:GridTemplateColumn DataField="Mon6" UniqueName="Mon6" Visible="false" ItemStyle-CssClass="account_Headcol">
   <ItemTemplate>
<asp:HyperLink ID="Mon6HLnk" runat="server" Visible="false"></asp:HyperLink>
<asp:Label runat="server" Text="" ID="Mon6Lbl"></asp:Label>
 <telerik:RadToolTip runat="server" ID="radTooltip6"  ShowEvent="OnMouseOver"  HideEvent="LeaveToolTip"  IsClientID="true" >
 <asp:Label runat="server" ID="lblTooltipText6"></asp:Label>
  </telerik:RadToolTip>
  </ItemTemplate>
</telerik:GridTemplateColumn>

And Binding Tooltip data in ItemDataBound event of RadGrid like below

Dim lab As Label = CType(gridDataItem("Mon" & i).FindControl("lblTooltipText" & i), Label)
lab.text="<htm><table><tr><td>data 1</td></tr><tr><td>data 2</td></tr></table></html>"

but if won't use RadTooltip i am not getting the issue,Please help me how to fix the issue with RadTooltips

Hi

I use the DataNavigateUrlField property to transfer users to Another page when they click a node in the tree, is there Another way to do that using JavaScript instead, for example I use this exsisting JavaScript..

Can this be modified to transfer the user to the page that is defined using the DataNavigateUrlField property?

Hi telerik team,

I am using telerik

Version=2011.1.426.35

and got the error in IE9 or 10 can you provide any fix for this ASAP 


The code which i am using is--

</a><span><a href="javascript:;" onclick="return OpenWindow(0);">Request Demo</a>
</a><span><a href="javascript:;" onclick="return OpenWindow(1);">Watch vedio</a>

<telerik:RadWindowManager Behaviors="Close" ID="RadWindowManager" runat="server"
        VisibleStatusbar="false" VisibleOnPageLoad="false">
        <Windows>
            <telerik:RadWindow ID="winRequestDemo" VisibleOnPageLoad="false" Title="Request a Demo or more Information"
                NavigateUrl="~/PopupRequestDemo.aspx" runat="server" Width="850px" Height="640px"
                Modal="true" ReloadOnShow="true">
            </telerik:RadWindow>
            <telerik:RadWindow ID="winPopupVideoPlayer" VisibleOnPageLoad="false" Title="Product Video"
                NavigateUrl="~/PopupVideoPlayer.aspx" runat="server" Width="600px" Height="575px"
                Modal="true" ReloadOnShow="true">
            </telerik:RadWindow>
        </Windows>
    </telerik:RadWindowManager>


<telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
        <script language="javascript" type="text/javascript">
            function OpenWindow(windowIndex) {
                //get the current windows collection
                var manager = $find("<%=RadWindowManager.ClientID %>");
                var windows = manager.get_windows();
                var win = windows[windowIndex];

                if (!win.isVisible()) {
                    win.show();
                    win.center();
                }
                return false;
            }
        </script>
    </telerik:RadCodeBlock>

Thanks
Pankaj

This issue is fixed in Q1 2013 SP1.

In Q3 2013 Firefox and Chrome freeze when a container with a select element is made visible with JavaScript and RadFormDecorator is present on the page. You can follow the issue's progress here.

The issue will be fixed for the upcoming Q3 2013 SP1. For the time being possible workarounds are:

• Setting the ControlsToSkip property of the RadFormDecorator to "Select".
• OR placing the provided JavaScript code from the attached archive below the declaration of the RadFormDecorator.

Sample scenarios that reproduce the issue are:

• Expanding an inner item from a RadPanelBar. The RadPanelBar has multiple Items that contain select elements and a RadFormDecorator is present on the page.
• JavaScript is used to set the display property of a container with a select element to "block" for example, multiple containers with select elements are present on the page and RadFormDecorator is used. For example:

JavaScript:

ASPX: