How to open modal popup window from already open modal popup window?

[JJ]

Hello All,

I want to open modal popup window from already opened modal popup window.

Let's say I have already opened popup window called "open.aspx". I have hyperlink on that page. When I click on that hyperlink it should open another popup window "AnotherOpen.aspx". When I tried this, it showed me an error "radopen is not defined". So I put 

<telerik:RadWindowManager> in head section of that "open.asp". When I run again, it said it needs 
<telerik:RadScriptManager> .

When I put RadScriptManager on the page. It gave me the error stating "The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases".

How can solve this problem?

Any help would be appreciated.

Thanks in advance.

Sincerely,
JJ

[Marin Bratanov]

Hello Jj,

The RadWindowManager should be placed inside the form tag, not in the head section. What I would recommend, though is that you examine this help article, as it shows a better approach on opening a RadWindow from another RadWindow so that the second is not limited to the context of the first.


All the best,
Marin
the Telerik team