How to create and delete custom event logs in Windows using C# .NET Framework? In my latest project, I need to have a custom Windows event log to keep track of all the bugs reported by my applications. Therefore, I created an application to create this custom event log file.

First of all, you need to have using System.Diagnostics; We need to use System.Diagnostics namespace to create or remove custom event logs.

Codes to create custom event logs

EventLog.CreateEventSource(“ApplicationName”, “LogName”);

These codes will create an event log called ‘LogName’ and EventSource as ‘ApplicationName’.

Codes to delete custom event logs

EventLog.Delete(“LogName”);

Hope this will help…

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How to modify Windows System Registry Values with C#? As usual, you need to use Microsoft.Win32 Namespace ~ using Microsoft.Win32;. Let’s take Windows Application Event Logs values as an example. I want to change the MaxSize and Retention values in Application Event Log file by using C#.

Codes to change Windows System Registry values

RegistryKey TestEventLog = Registry.LocalMachine.OpenSubKey(“System\\CurrentControlSet\\Services\\EventLog\\Application”,true);
TestEventLog.SetValue(“MaxSize”, “102367232″, RegistryValueKind.DWord);
TestEventLog.SetValue(“Retention”, “0″, RegistryValueKind.DWord);

Above codes open Application event log and with write permission (,true). It changes both MaxSize and Retention values.
Just change the codes to suit your need.

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How to read and write Windows System Registry Keys and Values? I need to create a value at Windows System Registry for my project lately. It is used for SCOM discovery. I need a Windows System Registry key to determine that the server is the server that SCOM going to monitor.

First thing to do in your C#. Add using Microsoft.Win32; RegistryKey and Registry requires Microsoft.Win32 as the assembly reference.

Here are the codes that write Windows System Registry Keys.

RegistryKey JayceOoiKey = Registry.LocalMachine.CreateSubKey(“SOFTWARE\\JayceOoi”);

This will create key JayceOoi under HKEY_LOCAL_MACHINE\SOFTWARE\.

To read Test string value from HKEY_LOCAL_MACHINE\SOFTWARE\JayceOoi\

string Output = JayceOoiKey.GetValue(“Test”);

These are the methods that I use to read and write Windows System Registry Keys and Values. Hope it will help in your programming work.

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AWStats is a free powerful and featureful tool that generates advanced web, streaming, ftp or mail server statistics, graphically. I have using it lately to track web usage by loading data from the web log files. However, it does not show authenticated users which I wanted. I searched at AWStats website and found out that Authenticated users list is part of the features. And the demo have Authenticated users list too. Hmm… What should I do to turn Authenticated users list on?

Authenticated users list at AWStats

(more…)

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ASP.NET C# Input TextBox value by pressing Enter key. Huh? I want to get the value of the textbox without click on the submit button. But getting the textbox value by just pressing enter key on keyboard. How am I going to do so? The page just refresh if I press enter key. I want the enter key link to the submit button. Therefore, whenever I press enter key, I will get the textbox value.

Here is the solution to get it done. By adding defaultbutton variable in form or asp:Panel will solve it.

Code example

<form id=”form1″ defaultbutton=”Button1″ runat=”server”>
<div>
<asp:TextBox ID=”TextBox1″ runat=”server”></asp:TextBox>
<asp:Button ID=”Button1″ runat=”server” Text=”Button” OnClick=”Button1_Click” />
<br />
<asp:Label ID=”Label1″ runat=”server” Text=”Label”></asp:Label>
<asp:Panel ID=”Panel1″ defaultbutton=”Button2″ runat=”server”>
<asp:TextBox ID=”TextBox2″ runat=”server”></asp:TextBox>
<asp:Button ID=”Button2″ runat=”server” Text=”Button” OnClick=”Button2_Click” />
<br />
<asp:Label ID=”Label2″ runat=”server” Text=”Label”></asp:Label>
</asp:Panel>
</div>
</form>

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