My C# Corner

Back in the good (or bad :) ) days of Win32 programming, there was a nice little function named FindWindow. It enabled you to find any window belonging to any process on your system

These days are gone with C# .NET, well... not quite!

If you have been looking for an alternative to FindWindow, Read along. There are two alternatives, the first involves invoking FindWindow directly from the Native Win32 DLL API, but that takes us back to the old days.

In Console Applications, you don't have an event message loop like in a Windows Application project, hence, so you can't use the System.Windows.Forms.Timer object since it depends on Windows Message loop to fire its tick events.

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One common Windows Application development task is to validate a TextBox or a Windows Control against a certain value, or whether the user has entered a value at all before hitting the submit/Ok button, then display some kind of an error.

One of my clients needed to run a script on a user machine every time the user logged in. The script would import some registry keys and settings that customize certain parts in Windows for their client.

My task was to write the script. Well, my first thought was to write a text parser for their .reg file, then using the .NET Registry classes to import all the keys into the registry one by one.

In my previous article, How to track visitors to your site in ASP.NET & C#, I discussed how you can log the Host Info for each page visitor on your site using Dns.GetHostByAddress function.

One thing I did not stress out was the need to catch all exceptions from that method call. There are cases when this call:

Once you have published a site in ASP.NET, you'd like to know who are your visitors. One way is to check your event log on the host server. Another option is to write your own code. You'd basically like to log the IP address, and DNS name for the visitor, and it would be nice to know which page they are visiting.

To log the ip address using ASP.NET, you can call:

One common requirement especially when doing screen scrapping is to find strings contained between html tags, or other strings. Regular Expressions provide a powerful way to do so, but are initially intimidating for a beginner programmer. Here is an alternative solution to finding a string between two other strings that uses simple string manipulation in C#, without Regular Expressions:

Usage:

We all know how to remove/replace a string in C#, for example:

string myString = "Yousef (programmer) likes to write in C#";

To remove "(programmer)", we can write:

myString = myString.Replace("(programmer)", "");