response.redirect not working in chrom

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ASP.NET

i have a problem .i'm grateful to answer.

i have a Gridview that included a button at one its column (inside itemtemplate).

i wrote a program inside Gridview rowcommand event for button that used response.redirect to self page. but this response.redirect not working at chrome or firefox. but working in IE correctly.

my code is:

public void G2_RowCommand(object sender, GridViewCommandEventArgs e)// in GridView,each button that be clicked,call this Gridview event 
{
    if (e.CommandName == "edit")//if this condition was true , 
    {
        Session.Remove("type");
        Session.Add("taskReport_id",e.CommandArgument.ToString());
        Response.Redirect("Default3.aspx#3");
      }  
    }

I tried below but this not working also

Page.ClientScript.RegisterStartupScript(Page.GetType(), "script", "window.location.href='Default3.aspx#3';", true);