docs(ajax): troubleshooting for RadAjax in SharePoint

Author: Marin Bratanov

controls/ajaxmanager/troubleshooting/dynamically-adding-radajaxmanager-to-sharepoint-web-parts.md

@@ -5,7 +5,7 @@ description: Dynamically Adding RadAjaxManager to Sharepoint Web Parts
 slug: ajaxmanager/troubleshooting/dynamically-adding-radajaxmanager-to-sharepoint-web-parts
 previous_url: ajax/radajaxmanager/troubleshooting/dynamically-adding-radajaxmanager-to-sharepoint-web-parts
 tags: dynamically,adding,radajaxmanager,to,sharepoint,web,parts
-published: True
+published: false
 position: 4
 ---
 

sharepoint/troubleshooting/sharepoint-ajax-updates.md

@@ -3,18 +3,25 @@ title: Using AJAX in SharePoint WebParts
 page_title: Using AJAX in SharePoint WebParts | UI for ASP.NET AJAX Documentation
 description: Using AJAX in SharePoint WebParts
 slug: sharepoint/troubleshooting/sharepoint-ajax-updates
+previous_url: controls/ajaxmanager/troubleshooting/dynamically-adding-radajaxmanager-to-sharepoint-web-parts
 tags: sharepoint,ajax
 published: True
 position: 0
 ---
 
-# Using AJAX in SharePoint WebParts
+# Using Telerik AJAX in SharePoint WebParts
 
 
 
-When using Ajax in SharePoint WebParts we recommend to add **RadAjaxManager** programmatically. This should be done in the **OnInit** event of the Web Part and then add the ajax settings in **CreateChildControls**.
+When using Ajax in SharePoint WebParts we recommend to add **RadAjaxManager** programmatically. 
 
-Here is a short example of what the code-behind will look in this case:
+This should be done in the `OnInit` event of the Web Part
+
+You should then add the ajax settings in `CreateChildControls`.
+
+Here is a short example of what the code-behind can look in this case:
+
+>caption How to use RadAjax in SharePoint Web Parts
 
 ````C#
 public class WebPart1 : WebPart
@@ -99,3 +106,31 @@ End Class
 ````
 
 
+
+## Troubleshooting
+
+Avoid using two different methods of AJAX-enabling content. For example, if you use the approach above, do not use **RadAjaxPanel** or **asp:UpdatePanel** for the same content.
+
+**RadAjaxPanel** cannot be guaranteed to work as expected under SharePoint.
+
+Make sure there are no JavaScript errors or invalid markup on the page. Either of these issues tends to break AJAX requests.
+
+If you get the following error:
+
+>The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases
+
+you can try these options:
+
+* Move the SharePoint Web Part Manager from the header to the body, or after the script manager. Here is an example of what you should look for:
+
+	**Markup**
+
+		<SharePoint:AjaxDelta id="DeltaSPWebPartManager" runat="server">
+            <WebPartPages:SPWebPartManager runat="server">
+            </WebPartPages:SPWebPartManager>
+        </SharePoint:AjaxDelta>
+
+
+* Use only **asp:UpdatePanel** and **asp:UpdateProgress** controls to AJAX-enable the content, without using RadAjax.
+
+