Is there a way to clear query string parameters when posting back?

Question

I have a form that sometimes gets linked to with some query string parameters. The problem is that when I post back the form, the query string parameter is still there. It's not really an issue the way I have it setup, but I just don't like it being there, and could see it being a problem if you needed to check for input in a certain order.

Is there a way to clear that query string parameter in an easy, clean way? I know I could change the PostBackURL on the button, but that doesn't seem too efficient.

Answer 1

put this at the bottom of your page?

<script language="javascript" type="text/javascript">
    document.forms[0].action = window.location.pathname;
</script>

Answer 2

I was stuck with same issue.

I solved it using the following code block:

private void ClearQueryString()
{
    PropertyInfo isreadonly = typeof(System.Collections.Specialized.NameValueCollection).GetProperty("IsReadOnly", BindingFlags.Instance | BindingFlags.NonPublic);
    isreadonly.SetValue(this.Request.QueryString, false, null);
    this.Request.QueryString.Remove("Action");
    this.Request.QueryString.Remove("param1");
    this.Request.QueryString.Remove("paramN");
}