Hello,

i am using a PopupControl in a Column of a ASPXGridview.

It is running fine, as long as i didn't expand the Detailrow. After i expand and close the Detailrow, the popup throws a Javascripit-Exception "Element is null" in Line 8 ( this.GetMainElement() is in this Line and returns null ) and the Popup will not show.

DevExpress-Version = 9.3.2

.Net-Version = 3.5

Thanks for ur Help

-----------------------------------------

It was a Error in my Code.

The Popup in the Gridview and in the Detailrow had the same ID

 Javascript-Code for the Exception:

------------------------------------------------------------------------------------

ASPxClientCallbackPanel = _aspxCreateClass(ASPxClientControl, {
 constructor: function(name) {
  this.constructor.prototype.constructor.call(this, name);
  this.allowMultipleCallbacks = false;
 },
 GetContentElement: function() {
  var element = this.GetMainElement(); <------------------------------------------------------------------------------- This returns Null
  return element.tagName == "TABLE" ? element.rows[0].cells[0] : element; <------------------------------ This throws the Exception, because Element is NULL
 },
 OnCallback: function(result) {
  _aspxSetInnerHtml(this.GetContentElement(), result);
 },
 DoBeginCallback: function(command){
  ASPxClientControl.prototype.DoBeginCallback.call(this, command);
  this.ShowLoadingPanel();
 },
 ShowLoadingPanel: function(){
  var element = this.GetContentElement();
  var mainElement = (element.tagName == "TD") ? this.GetMainElement() : element;
  var elementWidth = mainElement.style.width;
  var elementHeight = mainElement.style.height;
  var div = this.CreateLoadingDiv(element);
  if(div == null)
   element.innerHTML = "";
  if(div != null) {
   this.CreateLoadingPanelWithAbsolutePosition(element, mainElement);
  } else {
   if(elementWidth != "" && elementHeight != "")
    this.CreateLoadingPanelWithAbsolutePosition(element, mainElement);
   else
    this.CreateLoadingPanelInsideContainer(element);
  }
 },
 PerformCallback: function(parameter) {
  this.CreateCallback(parameter);
 }
});

--------------------------------


ASPX-Code

Popupcontrol:

---------
                 <dxpc:ASPxPopupControl ID="popup" ClientInstanceName="popup" runat="server" 
                     AllowDragging="True" PopupHorizontalAlign="OutsideRight" HeaderText="Notiz" 
                     CssFilePath="~/App_Themes/Aqua/{0}/styles.css" CssPostfix="Aqua" 
                     SpriteCssFilePath="~/App_Themes/Aqua/{0}/sprite.css">
                     <ContentStyle VerticalAlign="Top">
                     </ContentStyle>
                    <ContentCollection><dxpc:PopupControlContentControl ID="PopupControlContentControl1" runat="server">
                        <dxcp:ASPxCallbackPanel ID="cpPopup" ClientInstanceName="cpPopup" runat="server" Width="320px" OnCallback="cpPopup_Callback">
                            <PanelCollection>
                                <dxp:PanelContent ID="PanelContent1" runat="server">
                                   <asp:Label ID="lblComment" runat="server" />
                                </dxp:PanelContent>
                            </PanelCollection>
                        </dxcp:ASPxCallbackPanel>
                    </dxpc:PopupControlContentControl></ContentCollection>
                </dxpc:ASPxPopupControl>

------

GridciewColumn:

                        <dxwgv:GridViewDataTextColumn FieldName="noteForForwardingCompany" VisibleIndex="17" Caption="Info S">
                            <EditFormSettings Visible="True" />
                            <DataItemTemplate>
                                <%#getCommentPopUpLink("popup", "cpPopup", Container.KeyValue, 2, Eval("noteForForwardingCompany"), "mehr ...")%>
                            </DataItemTemplate>
                        </dxwgv:GridViewDataTextColumn>

--------------------------------
Codebehind:


        Protected Function getCommentPopUpLink(ByVal popupIDName As String, ByVal popupClientName As String, ByVal keyObj As Object, ByVal commentID As Integer, ByVal commentObj As Object, ByVal text As String) As String
            Dim result As String = "&nbsp;"
  

            If (Not String.IsNullOrEmpty(CStr(commentObj))) Then
                'Der Parameterstring, der im Callbackereigniss ausgewertet wird. Er besteht aus dem PrimaryKey der Zeile und einer ID zur selectierung des richtigen Comments
                Dim parameter As String = CLng(keyObj) & "-" & commentID

                'Der Commentar kann inicht direkt übergeben werden, da die SOnderzeichen im Kommentar ggf. Probleme verursachen
                ''Der Parameterstring, der im Callbackereigniss ausgewertet wird. Er besteht aus dem PrimaryKey der Zeile und dem Kommentar
                'Dim parameter As String = CLng(keyObj) & "-" & commentObj.ToString

                Dim jsFunction As String = popupIDName & ".ShowAtElement(this);" & popupClientName & ".PerformCallback('" & parameter & "');"
                result = "<a href='BLOCKED SCRIPTvoid(0);' onclick=" & jsFunction & ">" & text & "</a>"
            End If

            Return result
        End Function



    Protected Sub cpPopup_Callback(ByVal source As Object, ByVal e As DevExpress.Web.ASPxClasses.CallbackEventArgsBase)
       .....
    End Sub

.