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WebCombo In Ultrawebgrid causes page crash
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Hi,

 I am using unbound ultrawebgrid with one of the columns as webcombo. User is supposed to put values in editable columns & select value from webcombo column or enter text in it. Then he click on the server side button to save the entered data.

But when user clicks on webcombo column & does not enter any custom text or does not select any value from the list & try to save the date, the page crashes saying the following:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Infragistics.WebUI.UltraWebGrid.UltraWebGrid.ResolveCellLevel(String level, String dataKey)
   at Infragistics.WebUI.UltraWebGrid.UltraWebGrid.StateChangeProcessor.ProcessChanges()
   at Infragistics.WebUI.UltraWebGrid.UltraWebGrid.ProcessChanges(StateChanges stateChanges, Boolean fireEvents)
   at Infragistics.WebUI.UltraWebGrid.UltraWebGrid.LoadPostData(String postDataKey, NameValueCollection values)
   at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown.
   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.portalpage_quality_aspx.ProcessRequest(HttpContext context) in c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\cabportal\21ab8e8a\bb02ea13\App_Web_8yyksov0.4.cs:line 0
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

 

Please help me on this.

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