Child page browser reload message

[Kashif Imran]

Hi,

I am using RadWindow to show details of an item. I have image on parent page and using onclick I call the javascript function below. Image is added to the page in code behind like this:

sb.Append(string.Format("<img title=\"Details\" src=\"images/details.png\" onclick=\"ShowWindow('SessionDetails.aspx?id={0}');return false;\"/>&nbsp;", pid));

 

 var oldUrl;
        function ShowWindow(url) {
            var oWnd = $find("<%=rwDialog.ClientID%>");
            oWnd.setUrl(url);
            oWnd.setSize(750, 480);
            oWnd.show();
            if (oldUrl == url) {
                oWnd.reload();
            }
            oldUrl = url;
        }

If I click on image to see details, it works fine. Now if I click on the same item again (without clicking any other item), it show window with the same page but without post back. Thats why I used oldUrl in script above. If page is different from last click, it only sets the url. But I used clicked on the same item, reload will give them fresh page. Problem is that that it gives browser message that page will reload.

Another thing I noticed is that it happens only if I use a close button in my child page. If I use RadWindow's default close button to close the window, I dont get that reload warning. Any ideas how can i avoid that reload message?

This is how I close child window

private void CloseWithoutParentRefresh()
    {
        string script = string.Format("<script>CloseOnReload()</" + "script>");
        ClientScript.RegisterStartupScript(this.GetType(), "CloseOnReload", script);
    }

  //GetRadWindow obtains a reference to the hosting RadWindow"
        function GetRadWindow() {
            var oWindow = null;
            if (window.radWindow)
                oWindow = window.radWindow;
            else if (window.frameElement.radWindow)
                oWindow = window.frameElement.radWindow;
            return oWindow;
        }
        function CloseOnReload(url) {
            GetRadWindow().close();
        }

[Georgi Tunev]

Hi Kashif,

The reason for the message is that you are making a postback and after that you call reload() which is the equivalent of pressing the F5 key on the content page. In such case (when there was a postback before that) you would always get a warning about sending POSTDATA again - this is the browser's default behavior.

What I would suggest is not to call reload() but to load the content page again.
e.g.
oWnd.setUrl(oWnd.get_navigateUrl());


Greetings,
Georgi Tunev
the Telerik team

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[Kashif Imran]

Hi Georgi,

Thanks for your reply. I am calling reload because if RadWindow is set to same url it loads the old page and does not bring the new page. Below are some details

I have a details button next to each product. When user click on that button, I set url to Details.aspx?productId=xyz. Next time users click on different product and it goes to Details.aspx?productId=abc.

But if user close the windows and click on the same details button again, and if product details have changed in between, radwindow still shows the older page. I have Response.Write(DateTime.Now); in page load. And I can see if I click on a product detail I get a timestamp in child window. If I close window and click on same details button again, you will see timestap wont change. Shwoing that it show the page from cache and not the one from server.

Currently I am setting windows url onclose to a blank.aspx. This way I dont have to call reload and avoid both the issues. I get new page each time I show window and no reload error. But this is just a hack. I hope you can come up with better solution.

[Georgi Tunev]

Hi Kashif,

If you are using RadWindowManager, I would suggest to set ReloadOnShow=true and ShowContentDuringLoad=false - this setup should take care of the dialog's caching. Another option is to set DestroyOnClose=true, but in this case you again will need RadWindowManager.
If you are using standalone RadWindow however, the only approach is the one that you have currently used - to manually change the Url when the window is closed.

Greetings,
Georgi Tunev
the Telerik team

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