Script control 'dgPrd' is not a registered script control. Script controls must be registered using RegisterScriptControl() before calling RegisterScriptDescriptors().

[Sudha]

hi,
I am getting an exception at

 

 

this.pnlprdDes.RenderControl(htmlWriterForPrdtLst);

that
"Script control 'dgPrd' is not a registered script control. Script controls must be registered using RegisterScriptControl() before calling RegisterScriptDescriptors().
Parameter name: scriptControl"

For this I tried to set the RegisterWithScriptManager property of the RadGrid to "False". Then I did not get any exception, but the control is not going back to a registered java script. Please help me in resolving this issue.

Thanks,
Sudha.

 

[Ripunjay]

Hi telerik team,
Please let us know if its possible to render an asp panel containing radgrid back to client after a server callback event.
Can you provide a sample project that has the below callback code registered on page load:

if (!IsCallback)
       {
           String cbReference = Page.ClientScript.GetCallbackEventReference(this, "arg",
              "ReceiveServerData", "context", true);

           String callbackScript = "function CallServer(arg, context) {" +
               cbReference + "; }";

           Page.ClientScript.RegisterClientScriptBlock(this.GetType(),
               "CallServer", callbackScript, true);
       }

and then the row click of radgrid calls a method "OnDatagridRowClick"

<ClientSettings>
                                                    <Selecting AllowRowSelect="True" />
                                                    <Scrolling AllowScroll="true" UseStaticHeaders="true" />
                                                    <ClientEvents OnRowSelected="OnDatagridRowClick" OnGridCreated="GridCreated" />
                                                </ClientSettings>

The "OnDatagridRowClick" in javascript calls the Callserver event registered in the first code sample above:

function OnDatagridRowClick(row)
{
CallServer("Callserver invoked");
}

And the RaiseCallBackEvent returns a string from server side to clientside again (pnlDataDetails is the panel containing the radgrid):

public void RaiseCallbackEvent(string eventsArgument)
    {

StringBuilder returnString = new StringBuilder();
System.IO.StringWriter stringWriterForDataList
                = new System.IO.StringWriter();
 Html32TextWriter htmlWriterForFileList
                = new Html32TextWriter(stringWriterForDataList);
this.pnlDataDetails.RenderControl(htmlWriterForDataList);
returnString.Append("ShowData" + "|" + stringWriterForDataList.ToString() );
callBackReturnData = returnString.ToString();

    }

public string GetCallbackResult()
    {
        return callBackReturnData;
    }

I expect the control to go back to the registered ReceiveServerData event in the first code sample:

function ReceiveServerData(retVal)
{
alert("After callback");
}

But this does not seem to happen. I need to update one grid on rowclick of another grid and hence I need to set "EnablePostBackOnRowClick" = true. This causes the control to go to pageload instead of ReceiveServerData event.
Also to avoid the exception which I was getting for rendering the panel containing the grid, I had set RegisterWithScriptManager = false. But that made the grid lose the styling applied. Please help me here ASAP as this has become a kind of showstopper in my application.

Thanks,
Ripunjay

[Vasil]

Hello,

You could use web page methods like is shown in this online demo:
http://demos.telerik.com/aspnet-ajax/grid/examples/client/databinding/defaultcs.aspx

You need to set EnablePageMethods property of the RadScriptManager to "true" to be able to use such a methods. Please examine how GetCount function is defined and used in the demo.

I hope this helps.

Greetings,
Vasil
the Telerik team