2.0: unexpacted Application_Error

[R.A.M.]

Hello,
I have a problem with unexpected Application_Erro().
I have ASP.NET application with start page Default.aspx containg
<asplaceHolder ID="Place" runat="server" />
for custom login control.
Here is Default.aspx.cs:

public partial class DefaultPage : System.Web.UI.Page
{
class DemoLogin : Login
{
public DemoLogin(string ID) : base()
{
this.ID = ID;
DestinationPageUrl = "Welcome.aspx";
TitleText = "<b>Logging in</b>";
UserNameLabelText = "User";
PasswordLabelText = "Password";
PasswordRequiredErrorMessage = "Password required.";
LoginButtonText = "Login";
LoginButtonType = ButtonType.Button;
RememberMeSet = true;
RememberMeText = "Remeber";
InstructionText = "<i>Enter any username and password
\"demo\".</i>";
FailureText = "Failure. Try again.";
}
override protected void OnAuthenticate(AuthenticateEventArgs
e)
{
e.Authenticated = (UserName != "" && Password == "demo");
}
}
private void Page_Load(object sender, EventArgs e)
{
Browser.Text = Request.Browser.Browser + " " +
Request.Browser.Version;
Platforma.Text = Request.Browser.Platform;
Place.Controls.Add(new DemoLogin("Login"));
Session["User"] = Application["Users"];
}
}

PROBLEM: After running Page_Load I receive infinite sequence of
unexpected Application_Error() and then Session_Start().
Here is Global.asax:

<script runat="server">
void Application_Start(object sender, EventArgs e)
{
Application["Users"] = 0;
}
void Application_End(object sender, EventArgs e)
{
Application["Users"] = 0;
}
void Application_Error(object sender, EventArgs e)
{
Response.Redirect("Problem.html");
}
void Session_Start(object sender, EventArgs e)
{
Application.Lock();
Application["Users"] = Convert.ToInt32(Application["Users"]) +
1;
Application.UnLock();
}
void Session_End(object sender, EventArgs e)
{
Application.Lock();
Application["Users"] = Convert.ToInt32(Application["Users"]) -
1;
Application.UnLock();
}
</script>

The problem appeared a few days ago, application has been working for
a few months without problem, I changed nothing.
Could you explain me the problem plase?
Thank you very much!
/RAM/

 

[Guest]

The first thing to attend to is to take the time to wrap your Page_Load
handler code in a try / catch block and actually output the Exception Message
and StackTrace properties so you can get an idea of what actually happened.
Right now, your code doesn't do any of that so how can you reasonably expect
to be able to diagnose the issue?

Peter

 

[R.A.M.]

The first thing to attend to is to take the time to wrap your Page_Load
handler code in a try / catch block and actually output the Exception Message
and StackTrace properties so you can get an idea of what actually happened.
Right now, your code doesn't do any of that so how can you reasonably expect
to be able to diagnose the issue?

Peter

I did what you suggested - that's how I diagnosed the isue. In my post
I simplified my code - just removed diagnosing code.