Reset Scroll Position When Using MaintainScrollPositionOnPostback

If you're using MaintainScrollPositionOnPostback="true" to, well, maintain your scroll position on postback, sometimes you still want to bump the scroll up to the top (if you're using multiple panels or whatever. Here is a nice and easy fix.

1. Put this method in your code-behind:

    private void ResetScrollPosition()
    {
        if (!ClientScript.IsClientScriptBlockRegistered(this.GetType(), "CreateResetScrollPosition"))
        {
            ClientScript.RegisterClientScriptBlock(this.GetType(), "CreateResetScrollPosition", "function ResetScrollPosition() {" + Environment.NewLine + 
                " var scrollX = document.getElementById('__SCROLLPOSITIONX');" + 
                Environment.NewLine + " var scrollY = document.getElementById('__SCROLLPOSITIONY');" + 
                Environment.NewLine + " if (scrollX && scrollY) {" + 
                Environment.NewLine + "    scrollX.value = 0;" + 
                Environment.NewLine + "    scrollY.value = 0;" + 
                Environment.NewLine + " }" + 
                Environment.NewLine + "}", true);

            ClientScript.RegisterStartupScript(this.GetType(), "CallResetScrollPosition", "ResetScrollPosition();", true);
        }
    }

2. Call ResetScrollPosition(); in any method where you want to reset the scroll position.