I need to call the following programatically to set something up when a modal popup is shown.

Sys.Application.add_load(modalSetup);

Something along the lines.

<script type='text/javascript'>
            Sys.Application.add_load(modalSetup);
            function modalSetup() {
                var modalPopup = $find("PopupBehaviorId");
                if (modalPopup != null) {
                    modalPopup.add_shown(SetFocusOnControl);
                }
            }

            function SetFocusOnControl() {
                alert('test');
            }
        </script>

Now the problem is that I have a script manager on the master page.

If I put this script manually (not programatically) below the script manager in the master page, it will work correctly.

But when I'm adding this programatically in the user control for modal popup (which I need to) using either ScriptManager.RegisterClientScriptBlock or Page.ClientScript.RegisterClientScriptBlock, it throws the famous sys is undefined error.

I know this is happening because this programatic injection puts it into the Head section before the ScriptManager line is executed.

How can I get around this. Is it possible to say insert this script at the end of the page and not at the top?

I need to call the following programatically to set something up when a modal popup is shown.

Sys.Application.add_load(modalSetup);

Something along the lines.

<script type='text/javascript'>
            Sys.Application.add_load(modalSetup);
            function modalSetup() {
                var modalPopup = $find("PopupBehaviorId");
                if (modalPopup != null) {
                    modalPopup.add_shown(SetFocusOnControl);
                }
            }

            function SetFocusOnControl() {
                alert('test');
            }
        </script>

Now the problem is that I have a script manager on the master page.

If I put this script manually (not programatically) below the script manager in the master page, it will work correctly.

But when I'm adding this programatically in the user control for modal popup (which I need to) using either ScriptManager.RegisterClientScriptBlock or Page.ClientScript.RegisterClientScriptBlock, it throws the famous sys is undefined error.

I know this is happening because this programatic injection puts it into the Head section before the ScriptManager line is executed.

How can I get around this. Is it possible to say insert this script at the end of the page and not at the top?

• javascript
• asp
• webforms
• asp-ajax
• scriptmanager

Share Improve this question Follow edited Mar 29, 2021 at 8:13 Brian Tompsett - 汤莱恩 5,8937272 gold badges6161 silver badges133133 bronze badges asked Oct 11, 2011 at 22:27 Alex JAlex J 1,56733 gold badges2626 silver badges4242 bronze badges

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1 Answer 1

Sorted by: Reset to default 5 +100

You can use ScriptManager's RegisterStartupScript method.