Question

How would i go about to do this?

protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            doSomething();
        }
        catch (Exception ex)
        {
            // Here i would like to know that the page is "Problem.aspx"
            // and that it was caused from the doSomething() function
        }
    }

    private void doSomething()
    {
        logToSomething();
    }

Answer 1

I’m using this little class to log errors, have a look on how i get the page and the function(Stacktrace):

public static class ErrorLog
{
    public static void WriteError(Exception ex)
    {
        try {
            string path = "~/error/logs/" + System.DateTime.Now.ToString("dd-MM-yyyy") + ".txt";
            if ((!System.IO.File.Exists(System.Web.HttpContext.Current.Server.MapPath(path)))) {
                System.IO.File.Create(System.Web.HttpContext.Current.Server.MapPath(path)).Close();
            }
            using (System.IO.StreamWriter w = System.IO.File.AppendText(System.Web.HttpContext.Current.Server.MapPath(path))) {
                w.WriteLine(System.Environment.NewLine + "Log Entry : {0}", System.DateTime.Now.ToString(System.Globalization.CultureInfo.InvariantCulture));
                var page = VirtualPathUtility.GetFileName(HttpContext.Current.Request.Url.AbsolutePath);
                w.WriteLine("Error in: " +  page);
                string message = "Message: " + ex.Message;
                w.WriteLine(message);
                string stack = "StackTrace: " + ex.StackTrace;
                w.WriteLine(stack);
                w.WriteLine("__________________________");
                w.Flush();
                w.Close();
            }
        } catch (Exception writeLogException) {
            try {
                WriteError(writeLogException);
            } catch (Exception innerEx) {
                //ignore
            }
        }
    }
}

It’s entirely sufficient for me.

Note: converted from VB.NET, hence untested