First, create a regular expression with named patterns, for example, IPAddr, Day, etc. The Discard named pattern names items that are not used. Then use the Match Result method to extract the item corresponding to the named pattern. String Pattern = @"(?[\S]+)(?[\s-\[]*)(?\d{1,2})(?/)(?[a-zA-Z]+)(?/...

In addition to the bits of an image, JPEG files have timestamps and other information embedded inside. The metadata consists of EXIF (Exchangable Image File Format) tags. You can extract a JPEG file's timestamp as follows: 1. Instantiate an ASCIIEncoding object. 2. Instantiate an Image object associ...

Environment.TickCount returns a 32-bit signed integer containing the amount of time in milliseconds that has passed since the last time the computer was started. But this value can overflow for systems that stay up for days at a time. To avoid this overflow problem, you can query the "System Up Time...

It's easy to attractively format XML data as long as it's well-formed. Just load the XML into an XmlDocument. Then write the XML into an XmlTextWriter with formatting enabled. finally, extract the XML text from the XmlTextWriter. // Attractively format the XML with consistant indentation. public sta...

Use the following method to determine the angle subtended at the earth's center by two geographical coordinates. Latitude is positive north of the equator. Longitude is negative west of Greenwich. Both latitude and longitude are specified in degrees: public static double AngleBetweenLocations(double...

Use the SHFileOperation API. In the SHFILEOPSTRUCT that you pass to SHFileOperation, set the pFrom field to a string containing each file or folder path seperated by a null character. Make sure that there is an additional null character at the end of the pFrom string. This code is adapted from sourc...

Here's the code to send an e-mail using .Net 2.0's System.Net.Mail namespace. Your SMTP server address is specified in the SmtpClient object's constructor. If you don't know your server address you may be able to find it in your e-mail client's configuration. Note: the .Net 1.1 System.Web.Mail names...

Use Environment.Exit to immediately return from a console application with a specified result code. using System; namespace ConsoleApplication1 { class Class1 { [STAThread] static void Main(string[] args) { Console.WriteLine("About to exit"); int exitCode = 0; Environment.Exit(exitCode); // This lin...

The .NET Framework 3.5 SP1 was released last fall along with Visual Studio 2008 SP1. The .NET Framework 3.5 SP1 installs the .NET Framework 2.0 SP2 and the .NET Framework 3.0 SP2 behind the scenes as prerequisites. Initially, the only way to get the .NET Framework 2.0 SP2 was to install the full .NE...

This function will return the x86 Program Files directory in all 3 of the windows configurations 32 bit Windows 32 bit program running on 64 bit Windows 64 bit program running on 64 bit windows static string ProgramFilesx86() { if( 8 == IntPtr.Size || (!String.IsNullOrEmpty(Environment.GetEnvironmen...