如何给top.location.href带参数？

Question

如何给username带参数？ 
string username = reader["username"].ToString();
this.Response.Write("<script>top.location.href='three.aspx?username='; </script>"); 

Answer 1

this.Response.Write(string.Format("<script>top.location.href='three.aspx?username={0}'; </script>",'参数名称变量'));  

Answer 2

Response.Redirect("three.aspx?username="+reader["username"].ToString()); 

Answer 3

 string strValue = "abcd";
 Response.Write("<script>top.location.href='Test2.aspx?username="+ strValue +"'</script>");