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Chad
888
Cancelling an ajax deleteRow from the Code behind
posted

I have an UltraWebGrid implemented with ajax updates and deletions working just fine.  The issue comes when the deletion/update occurs on the server, and due to constraints decides not to perform the deletion/update.  What I need to be able to do is cancel the client side deletion/update of the row and display a message to the user.  I am currently trying to hook into the XmlHTTPResponseHandler and AfterXmlHttpResponseProcessed events to try to cancel the deletion.

Is there a way to do this?  The gridResponse parameter on the XmlHTTPResponseHandler has a property Cancel - that is always False.  It I force this to True - the deletion does not happen - but I have no way to determine if the cancel needs to take place based on input from the server.  Any ideas?

Thanks

Chad

  • 5
    Offline posted

    Hi! 

    Did you find a solution to this problem?  I was wondering about the same thing and your post came up when I searched the web. 

    This is how I solved my problem. 

    In code behind:

    Try
      'Delete operation...
    Catch ex As Exception
      gridClaim.ClientResponse.Tag = XmlHTTPRequestType.DeleteRow
      gridClaim.ClientResponse.ResponseStatus = XmlHTTPResponseStatus.Fail
    End Try

    In aspx file:

    function gridClaim_XmlHTTPResponseHandler(gridName, rowId, xmlResponceObject)
    {
      if (xmlResponceObject.ReqType == igtbl_reqType.DeleteRow && xmlResponceObject.ResponseStatus != 0)
      {
        xmlResponceObject.Cancel = true;
      }
    }