1. Output data in the page (Background code popup prompt box)
(1), Response.Write ("<script>alert" (' Upload success! ');</script> "); Or Response.Write ("<script>alert ('" +str_message+ "');</script>");
(2), RegisterStartupScript ("true", "<script>alert" (' Upload succeeded! ') </script> ");
2. Page jump and pass parameters (pass parameters when page redirect URL, use "? "&" Between parameters and parameters when separating the link address and parameters of a page, with multiple parameters
(1) Response.Redirect ("~/welcome.aspx");
(2) Response.Redirect ("~/welcome.aspx? Parameter=one ");
(3) Response.Redirect ("~/welcome.aspx? Name= "+name+" &sex= "+sex);
Get the parameters in the background code of the Welcome.aspx page in three ways:
String name=request["name"];
String name = request.params["Name"];
String name = request.querystring["Name"];
3, Response.Write ("