Asp.net| Error | display
Print the error message.
public static string ShowError (Exception e)
{
Return "<font size=2> program error:" +e.message + "<BR> Details:" + e.stacktrace + </font> ";
}
public static void Checknull (object A,system.web.ui.page B)
{
if (object. Equals (A,null))
{
System.Web.UI.Page p=b;
P.response.write ("<font size=2> exception: <font color=red> Invalid ID parameter value (to find a record that matches the ID value). </font> <a href=\ "javascript:history.back (); \ > Click Back </a></font>");
P.response.end ();
}
}
More simple, no explanation ... The first is a simple error message when the program goes wrong. (It seems to be less than ha.)
The second major prevents access to records that do not exist, resulting in records. For example ... userinfo.aspx?id=12 (normal)
But userinfo.aspx?id=1245821521 made a mistake.
Call this on the code page:
Cp_user User=usermanager.getuser (Convert.toint64 (_id));
Secu.Str.CheckNull (User,this); This sentence ~! ~! ~! ~! ~! ~!
Username.text=user.uname;
If the GetUser method returns a valid object, it is skipped directly after the check.
If the record does not exist at all, it returns a null ... Displays an error and stops the execution page.
