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File: Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ErrorTestCustomLog" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="A:"></asp:Label>
<asp:TextBox ID="txtA" runat="server">5</asp:TextBox><br />
<asp:Label ID="Label2" runat="server" Text="B:"></asp:Label>
<asp:TextBox ID="txtB" runat="server">0</asp:TextBox><br />
<br />
<asp:Button ID="cmdCompute" runat="server" OnClick="cmdCompute_Click" Text="Divide A / B" /><br />
<br />
<br />
<asp:Label ID="lblResult" runat="server" Font-Bold="True" ForeColor="Red"></asp:Label></div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Diagnostics;
using System.Drawing;
public partial class ErrorTestCustomLog : System.Web.UI.Page
{
protected void cmdCompute_Click(object sender, EventArgs e)
{
try
{
decimal a, b, result;
a = Decimal.Parse(txtA.Text);
b = Decimal.Parse(txtB.Text);
result = a / b;
lblResult.Text = result.ToString();
lblResult.ForeColor = Color.Black;
}
catch (Exception err)
{
lblResult.Text = "<b>Message:</b> " + err.Message + "<br /><br />";
lblResult.Text += "<b>Source:</b> " + err.Source + "<br /><br />";
lblResult.Text += "<b>Stack Trace:</b> " + err.StackTrace;
lblResult.ForeColor = Color.Red;
if (!EventLog.SourceExists("DivideByZeroApp"))
{
EventLog.CreateEventSource("DivideByZeroApp", "ProseTech");
}
EventLog log = new EventLog("ProseTech");
log.Source = "DivideByZeroApp";
log.WriteEntry(err.Message, EventLogEntryType.Error);
}
}
}
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