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POReturning a CollapsiblePanelExtender over/through ajax/javascript
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  1. POReturning a CollapsiblePanelExtender over/through ajax/javascript
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    copied!<p>I would like to be able to return a programmatically generated collapsible panel extender through javascript along with it's panel and so on. I've got the panel and associated tables going through just fine however when I try and attach the cpe it breaks. and returns an error: </p> <p>The cpe panel and such are being generaged by a WebService and I'm trying to get JS to write what the webservice returns to a particular field dynamically </p> <p><code>Microsoft JScript runtime error: Sys.Net.WebServiceFailedException: The server method 'Sub_Menu_Helper' failed with the following error: System.InvalidOperationException-- Page cannot be null. Please ensure that this operation is being performed in the context of an ASP.NET request.</code> </p> <pre><code> { Label somelabel = new Label(); somelabel.ID = somenumber.ToString(); somelabel.Text = somenumber.ToString(); subpnlContent.Controls.Add(somelabel); ++somenumber; } CollapsiblePanelExtender cpeMenuLast = new CollapsiblePanelExtenderEx(); cpeMenuLast.ID = "subcpe" + strMenuId + strParentHierarchyIds; cpeMenuLast.TargetControlID = "subpnlContent" + strParentMenuId + "_" + strMenuId; cpeMenuLast.ExpandControlID = "cellContent" + strParentMenuId + "_" + strMenuId; cpeMenuLast.CollapseControlID = "cellContent" + strParentMenuId + "_" + strMenuId; cpeMenuLast.Collapsed = bCollapsed; cpeMenuLast.TextLabelID = strMenuName; cpeMenuLast.ExpandedText = m_strButtonLabelHide; cpeMenuLast.CollapsedText = m_strButtonLabelShow; cpeMenuLast.ImageControlID = "imglnk" + strMenuId; cpeMenuLast.CollapsedImage = "~/App_Themes/default/nbExpand.gif"; cpeMenuLast.ExpandedImage = "~/App_Themes/default/nbCollapse.gif"; cpeMenuLast.SuppressPostBack = true; cpeMenuLast.ScrollContents = false; //Add Everything cellSubMenu.Controls.Add(subpnlContent); cellSubMenu.Controls.Add(cpeMenuLast); row.Cells.Add(cellSubMenu); tbl.Rows.Add(row); using (StringWriter sw = new StringWriter(sb)) { using (HtmlTextWriter tw = new HtmlTextWriter(sw)) { tbl.RenderControl(tw); } } </code></pre> <p>How can I fix this?</p>
 

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