Delay's Blog is the blog of David Anson, a Microsoft developer who works with C#, XAML, HTML, and Azure.
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Last week, I released the ComputeFileHashes tool for calculating file checksums. (To read more about what checksums are and why they're useful, please refer to that post.) ComputeFileHashes is a fairly simple .NET command-line application for calculating the MD5, SHA-1, and CRC-32 hashes of one or more files. It takes advantage of the multi-processing capabilities of today's hardware to complete that task quickly - roughly on par with native-code implementations. ComputeFileHashes works quite well and I happily used it to verify the recently released Windows 7 Beta ISO images I'd downloaded.
Because not everybody is a fan of command-line tools, I thought it would be nice to use WPF to create a more user-friendly version of ComputeFileHashes. Once I'd done that, I knew it would be a trivial matter to publish the WPF version via ClickOnce to enable an absurdly easy install scenario. From there, porting to Silverlight would be straightforward and would offer an install-free, completely web-based solution with cross-platform (ex: PC/Mac), cross-browser (ex: IE/Firefox/Safari) appeal. What's more, because all of these platforms are built on .NET, so I expected to be able to take significant advantage of code sharing!
Click here or on the image below to install the ClickOnce version of ComputeFileHashes.
Click here or on the image below to run the Silverlight version of ComputeFileHashes in your browser.
Click here or on the image below to download the command-line and WPF versions of ComputeFileHashes - along with the ClickOnce and Silverlight versions AND the complete source code for everything!
In the original release announcement, I wrote that "ComputeFileHashes is a simple tool intended to make verifying checksums easy for anyone.". Well, that's still the case - and adding support for WPF, ClickOnce, and Silverlight should make it even easier for everyone to use. Just decide what kind of user interface you prefer, and start using that version of ComputeFileHashes for all your checksumming needs! :)