[Solved] Programatically Created Grid (on Page_Init) with Drag n Drop

[Toby]

Hi,

I have  a grid created on the Page_Init method and the grid is populated client side from a webservice when I try and used drag n drop i get an exception on the server

System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.InvalidCastException: Unable to cast object of type 'System.Int32' to type 'System.String'.
   at Telerik.Web.UI.RadGrid.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   --- End of inner exception stack trace ---
   at System.Web.UI.Page.HandleError(Exception e)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest()
   at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
   at System.Web.UI.Page.ProcessRequest(HttpContext context)
   at ASP.organisationalviews2_aspx.ProcessRequest(HttpContext context) in c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\8c660e17\2b7f802b\App_Web_nrp1nnrc.16.cs:line 0
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

the drag n drop was working fine, but it seems to have broken since I converted the grid to be created at run time. I have also completed disconnected the clientside row dropping event and serverside RowDrop event but i still get this exception.

any ideas?.

[Toby]

i should add I only know about this exception because I am trapping

void Application_Error(object sender, EventArgs e) in Global.asax - otherwise it does not seem to fire.

[Nikolay Rusev]

Hello Toby,

I am afraid that I cannot determine what is causing described behavior from the information provided so far. Can you post your code?

All the best,
Nikolay
the Telerik team

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[Toby]

Hi,

I already have a another support request open with a copy of my application so I will deal with this issue there - I wil post the results here for other users...