Libraries Index
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Writing CDsImage Mastering API (IMAPI) Wrapper for .NET Last Updated: 27 June 2004 |
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Windows MessagesReceiving and Using Clipboard Change Notifications Adding Mouse Gesture Support to .NET Windows Applications Simple Interprocess Communications using WM_COPYDATA Last Updated: 10 November 2003 |
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Shell ProjectsThumbnail Extraction Using the Shell Creating and Modifying Shortcuts Adding, Deleting and Viewing Recent Documents Getting File Icons Using The Shell Last Updated: 1 November 2003 |
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Calculating CRC32 (and MDA5 and SHA-1) From .NETThe CRC (Cyclic Redundancy Checksum) algorithm is a highly optimised and powerful way of checking whether a large number of bytes have been modified or not. The algorithm scans through all the bytes and generates a 32 bit number to represent the contents - small changes in the file contents result in large changes in the check sum, and there is a very low chance that two different streams of bytes will have the same CRC. This article provides a high performance class for generating a WinZip compatible CRC32 checksum in .NET (VB.NET and C# versions provided). The sample also demonstrates using the Framework's Cryptography classes to generate SHA-1 and MD5 hashes. Last Updated: 23 October 2003 |
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GraphicsUsing Animated Cursors in .NET Hue, Luminance and Saturation in .NET Reading EXIF Tags From JPEG Files A .NET Implementation of the ZoomIn Utility Last Updated: 31 March 2003 |
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WindowsPainting in the MDI Client Area Last Updated: 4 March 2003 |
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