Do you know to generate error information to Windows Event Log? Most of the Windows application will output error information to Windows Event Logs if there are issues in that application. How do we do that in C#?

We need to use System.Diagnostics namespace.

Codes to generate information to output to Windows Event Logs

EventLog myLog = new EventLog();
myLog.Source = “YourApplication”;
myLog.WriteEntry(“Error Description”, EventLogEntryType.Error);

Enjoy coding…

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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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CS0016: Could not write to output file ‘c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files… ‘Access is denied.’
Do you face this problem lately? I did. I have problem to run ASP.NET web application on a fresh installed server. It cannot run ASP.NET even I install .NET Framework 3.5. Web application can be loaded after I register ASP.NET into IIS by using “aspnet_regiis.exe -i -enable“.

However, I faced the problem statement above. So what is the solution? It have something to do with file permission. Just follow below steps to fix it.
Grant full control to two users of your system “Network Service” and “YourComputerName\IIS_IUSERS” on the following folders.
1. C:\Windows\Temp
2. C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files
Restart IIS and try run your web application again.

Hope this guide will help.

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