Set Page.Trace.IsEnabled to true (C#) : Trace « Development « ASP.NET Tutorial
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- Trace
File: Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="SimpleTrace" %>
<!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">
</head>
<body>
<form id="form1" runat="server">
<div>
A Simple Tracing Example<br />
<br />
<asp:Button ID="cmdTrace" runat="server" OnClick="cmdTrace_Click" Text="Trace" /></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;
public partial class SimpleTrace : System.Web.UI.Page
{
protected void cmdTrace_Click(object sender, EventArgs e)
{
Page.Trace.IsEnabled = true;
Session["TestString"] = "This is just a string.";
Session["MyDataSet"] = new DataSet();
}
}