I have a generic function in one of my helper libraries that allows me to open a new browser window when a button is selected.  The button posts back to the server runs some code and opens a new window.  I often use this sort of thing on a reporting page allowing me to post some search criteria and open a new window (a pdf report).

I found this type of helper function useful however I found that I was losing my CSS after the postback.

To avoid losing the css keep the following in mind:

  • ensure that your css files are include declaratively in your aspx page (not through code behind)
  • use Page.ClientScript.RegisterStartupScript(this.GetType(),”name”,script); (Not Response.Write)

The end helper function looks something like the following:

    /// <summary>

    /// redirect to a new page from codebehind

    /// </summary>   

    static public void RedirectToNewWindow(string url, System.Web.UI.Page page) {       

        string script = "<script>window.open('" + url + "');</script>";

        page.ClientScript.RegisterStartupScript(page.GetType(), "redirectscript",script);       



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