Response.Redirect to new window

Question

I want to do a Response.Redirect("MyPage.aspx") but have it open in a new browser window. I've done this before without using the JavaScript register script method. I just can't remember how?

Answer 1

If you can re-structure your code so that you do not need to postback, then you can use this code in the PreRender event of the button:

protected void MyButton_OnPreRender(object sender, EventArgs e)
{
    string URL = "~/MyPage.aspx";
    URL = Page.ResolveClientUrl(URL);
    MyButton.OnClientClick = "window.open('" + URL + "'); return false;";
}

Answer 2

Contruct your url via click event handler:

string strUrl = "/some/url/path" + myvar;

Then:

ScriptManager.RegisterStartupScript(Page, Page.GetType(), "popup", "window.open('" + strUrl + "','_blank')", true);

Answer 3

You may want to use the Page.RegisterStartupScript to ensure that the javascript fires on page load.

Answer 4

You can use this as extension method

public static class ResponseHelper
{ 
    public static void Redirect(this HttpResponse response, string url, string target, string windowFeatures) 
    { 

        if ((String.IsNullOrEmpty(target) || target.Equals("_self", StringComparison.OrdinalIgnoreCase)) && String.IsNullOrEmpty(windowFeatures)) 
        { 
            response.Redirect(url); 
        } 
        else 
        { 
            Page page = (Page)HttpContext.Current.Handler; 

            if (page == null) 
            { 
                throw new InvalidOperationException("Cannot redirect to new window outside Page context."); 
            } 
            url = page.ResolveClientUrl(url); 

            string script; 
            if (!String.IsNullOrEmpty(windowFeatures)) 
            { 
                script = @"window.open(""{0}"", ""{1}"", ""{2}"");"; 
            } 
            else 
            { 
                script = @"window.open(""{0}"", ""{1}"");"; 
            }
            script = String.Format(script, url, target, windowFeatures); 
            ScriptManager.RegisterStartupScript(page, typeof(Page), "Redirect", script, true); 
        } 
    }
}

With this you get nice override on the actual Response object

Response.Redirect(redirectURL, "_blank", "menubar=0,scrollbars=1,width=780,height=900,top=10");

Answer 5

You can also use the following code to open new page in new tab.

<asp:Button ID="Button1" runat="server" Text="Go" 
  OnClientClick="window.open('yourPage.aspx');return false;" 
  onclick="Button3_Click" />

And just call Response.Redirect("yourPage.aspx"); behind button event.

Answer 6

I always use this code... Use this code

String clientScriptName = "ButtonClickScript";
Type clientScriptType = this.GetType ();

// Get a ClientScriptManager reference from the Page class.
ClientScriptManager clientScript = Page.ClientScript;

// Check to see if the client script is already registered.
if (!clientScript.IsClientScriptBlockRegistered (clientScriptType, clientScriptName))
    {
     StringBuilder sb = new StringBuilder ();
     sb.Append ("<script type='text/javascript'>");
     sb.Append ("window.open(' " + url + "')"); //URL = where you want to redirect.
     sb.Append ("</script>");
     clientScript.RegisterClientScriptBlock (clientScriptType, clientScriptName, sb.ToString ());
     }