в 15:30, 26 мая 2010

2010-05-26T15:30:47Z

Admin: 1 версия

2010-05-26T11:51:12Z

1 версия

Новая страница

==Is trace enabled (VB.net)==



<source lang="csharp">
<%@ Page Language="vb" %>
<html>
<head>
<title></title>
<script runat="server">
Sub Page_Load()
If Trace.IsEnabled = True Then
Message.Text = "Tracing is enabled."
Else
Message.Text = "Tracing is not enabled."
End If
End Sub
</script>
</head>
<body>
<asp:label id="Message" runat="server"/>
</body>
</html>

</source>

==Page Trace (C#)==



<source lang="csharp">
<%@ Page Language="C#" Debug="true" Trace="true" %>
<script runat="server">
void Page_Init()
{
Trace.Write("NOTE - First line of Page_Init");
}
</script>
<html>
<head>
<title>Demonstration of Page Events</title>
</head>
<body>
<form runat="server">
<asp:Button id="Button1" runat="server" Text="Submit"></asp:Button>
<br />
</form>
</body>
</html>

</source>

==Page Trace in code behind (C#)==



<source lang="csharp">
<%@ Page language="c#" src="SimpleTrace.aspx.cs" AutoEventWireup="false" Inherits="SimpleTrace" %>
<HTML>
<body>
<FORM id="Form1" method="post" runat="server">
<asp:Label id="Label1" runat="server">A Simple Tracing Example</asp:Label><BR>
<BR>
<asp:Button id="cmdTrace" runat="server" Width="104px" Text="Trace"></asp:Button><BR>
<BR>
</FORM>
</body>
</HTML>
<%--
using System;
using System.Collections;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
public class SimpleTrace : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label Label1;
protected System.Web.UI.WebControls.Button cmdTrace;

private void Page_Load(object sender, System.EventArgs e)
{
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
InitializeComponent();
base.OnInit(e);
}

private void InitializeComponent()
{
this.cmdTrace.Click += new System.EventHandler(this.cmdTrace_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void cmdTrace_Click(object sender, System.EventArgs e)
{
Trace.IsEnabled=true;
}
}

--%>

</source>

==Page trace mode (VB.net)==



<source lang="csharp">
<%@ Page trace= "true" %>
<script runat = "server">
Public Function Subtract( intFirst As Integer, intSecond As Integer) As Integer
Trace.Write( " intFirst : ", intFirst)
Trace.Write("intSecond : ", intSecond)
return intFirst - intSecond
End Function
</script>
The value of 45 minus 30 is : <%=Subtract(45, 30) %>

</source>

==Trace asp calendar event (C#)==



<source lang="csharp">
<%@ Page Language="C#" Trace="true" %>
<script runat="server">
void Page_Load()
{
Label1.Text = "www.nfex.ru";
Calendar1.TodaysDate = DateTime.Now;
}

</script>
<html>
<head>
<title>Show Trace</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label
id="Label1"
Runat="server" />
<asp:Calendar
id="Calendar1"
TodayDayStyle-BackColor="Yellow"
Runat="server" />

</div>
</form>
</body>
</html>

</source>

==Trace for loop (VB.net)==



<source lang="csharp">
<%@ Page Language="VB" Trace="true" %>
<script runat="server">
Sub Page_Load()
For counter As Integer = 0 To 9
ListBox1.Items.Add("item " & counter.ToString())
Trace.Warn("counter=" & counter.ToString())
Next
End Sub

</script>
<html>
<head>
<title>Page Trace</title>
</head>
<body>
<form id="form1" runat="server">
<div>

<asp:ListBox
id="ListBox1"
Runat="server" />

</div>
</form>
</body>
</html>

</source>

==Use Trace to debug (VB.net)==



<source lang="csharp">
<%@ Page Language="VB" Debug="true" Trace="true" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.Sqlclient" %>
<script runat="server">
Sub Button1_Click(sender As Object, e As EventArgs)
Trace.Write ("Click", "Start")
Dim conn As New _
SqlConnection("Server=foo;Database=pubs;Trusted_Connection=true")
Dim cmd As New SqlCommand("select * from authors", conn)
Try
Trace.Write("Opening connection")
Conn.Open()
DataGrid1.DataSource = cmd.ExecuteReader(CommandBehavior.CloseConnection)
DataGrid1.DataBind()
Catch ex As Exception
Trace.Warn(ex.Message)
Label1.Text = "Could not connect to the database - " & _
"please try again later."
End Try
End Sub
</script>
<html>
<head>
</head>
<body>
<form runat="server">
<asp:Button id="Button1" onclick="Button1_Click" runat="server" Text="Button"></asp:Button>
<asp:DataGrid id="DataGrid1" runat="server"></asp:DataGrid>
<asp:Label id="Label1" runat="server">Label</asp:Label>

</form>
</body>
</html>

</source>

==Write debug information to trace log (C#)==



<source lang="csharp">

<%@ Page trace= "true" %>
<script Language="c#" runat = "server">
public int Subtract(int intFirst, int intSecond)
{
Trace.Write(" intFirst : ", intFirst.ToString());
Trace.Write("intSecond : ", intSecond.ToString());
return intFirst - intSecond;
}
</script>
The value of 45 minus 30 is : <%=Subtract(45, 30) %>

</source>

==Write to Trace log in event action (C#)==



<source lang="csharp">
<%@ Page language="c#" src="TraceExample.aspx.cs" AutoEventWireup="false" Inherits="TraceExample" %>
<HTML>
<body>
<form id="Form1" method="post" runat="server">
<DIV style="FONT-SIZE: x-small; WIDTH: 416px; FONT-FAMILY: Verdana; POSITION: relative; HEIGHT: 152px" ms_positioning="GridLayout">
<asp:Button id="cmdWrite" style="Z-INDEX: 101; LEFT: 16px; POSITION: absolute; TOP: 64px" runat="server" Text="Write Message" Width="128px" Height="24px" Font-Size="X-Small" Font-Names="Verdana"></asp:Button>
<asp:Label id="Label1" runat="server" style="Z-INDEX: 102; LEFT: 16px; POSITION: absolute; TOP: 16px">A Simple Tracing Example</asp:Label>
<asp:Button id="cmdWriteCategory" style="Z-INDEX: 103; LEFT: 160px; POSITION: absolute; TOP: 64px" runat="server" Text="Write Message With Category" Width="216px" Height="24px" Font-Size="X-Small" Font-Names="Verdana"></asp:Button>
<asp:Button id="cmdError" style="Z-INDEX: 104; LEFT: 16px; POSITION: absolute; TOP: 96px" runat="server" Text="Write Exception" Width="128px" Height="24px" Font-Size="X-Small" Font-Names="Verdana"></asp:Button>
<asp:Button id="cmdSession" style="Z-INDEX: 105; LEFT: 160px; POSITION: absolute; TOP: 96px" runat="server" Text="Add Session Item" Width="136px" Height="24px" Font-Names="Verdana"></asp:Button></DIV>
</form>
<BR>
</body>
</HTML>

<%--
using System;
using System.Collections;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
public class TraceExample : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button cmdWrite;
protected System.Web.UI.WebControls.Label Label1;
protected System.Web.UI.WebControls.Button cmdWriteCategory;
protected System.Web.UI.WebControls.Button cmdError;
protected System.Web.UI.WebControls.Button cmdSession;

private void Page_Load(object sender, System.EventArgs e)
{
Trace.IsEnabled = true;
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.cmdWrite.Click += new System.EventHandler(this.cmdWrite_Click);
this.cmdWriteCategory.Click += new System.EventHandler(this.cmdWriteCategory_Click);
this.cmdError.Click += new System.EventHandler(this.cmdError_Click);
this.cmdSession.Click += new System.EventHandler(this.cmdSession_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void cmdWrite_Click(object sender, System.EventArgs e)
{

Trace.Write("About to place an item in session state.");
Session["Test"] = "Contents";
Trace.Write("Placed item in session state.");
}
private void cmdWriteCategory_Click(object sender, System.EventArgs e)
{
Trace.Write("Page_Load", "About to place an item in session state.");
Session["Test"] = "string in session";
Trace.Write("Page_Load", "Placed item in session state.");
}

private decimal DivideNumbers(decimal number, decimal divisor)
{
return number/divisor;
}
private void cmdError_Click(object sender, System.EventArgs e)
{
try
{
DivideNumbers(5, 0);
}
catch (Exception err)
{
Trace.Warn("cmdError_Click", "Caught Error", err);
}
}
private void cmdSession_Click(object sender, System.EventArgs e)
{
DataSet ds = new DataSet();
Session["MyDataSet"] = ds;
}
}

--%>

</source>

==Write to Trace (VB.net)==



<source lang="csharp">
<%@ Page Trace="true"%>
<script language="VB" runat="server">
Sub WriteToTrace()
Dim intCounter as integer
intCounter=1
Trace.Write ("FirstCategory", "Variable is initialized")
do while intCounter > 10
intCounter = intCounter + 1
loop
if intCounter < 10 then
Trace.Warn("ErrorCategory", "Value of intCounter is not incrementing")
end if
end Sub
</script>
<%
WriteToTrace()
%>

</source>

==Write trace warn (VB.net)==



<source lang="csharp">
<%@ Page Language="VB" Trace="True" %>
<html>
<head>
<title>Tracing Sample</title>
<script runat="server">
Sub Page_Load()
If Page.Trace.IsEnabled = True Then
Trace.Write("MyCategory", "Hello, Trace!")
Trace.Warn("MyCategory", "This text will be red!")
Message.Text = "Tracing is enabled for this page."
Else
Message.Text = "Tracing is not enabled for this page."
End If
End Sub
</script>
</head>
<body>
<asp:label id="Message" runat="server"/>
</body>
</html>

</source>

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ASP.Net/Development/Trace - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия