CalendarLib
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Sample library that demonstrates extending DataGridView WindowsForms control to simulate Month Calendar.
CloseableTabItem
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This is project demonstrates how to add a Close button to TabItems in WPF. Please read this article for more details:
http://geekswithblogs.net/kobush/archive/2007/04/08/CloseableTabItem.aspx
Drawing Custom Borders in Windows Forms
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This project demonstrates techniques required to draw custom borders on Windows Forms applications (that is to override default Windows borders, themed or not).
Read the full article here:
http://www.geekswithblogs.net/kobush/articles/CustomBorderForms.aspx
UPDATED: The project has moved to CodePlex where you can find latest version and support.
http://www.codeplex.com/Wiki/View.aspx?ProjectName=CustomerBorderForm
SmartPetShop
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Conversion of Microsoft's PetShop reference application to Windows Forms that demonstrates principles of Composite UI Application Block.
To download follow the link with recent date in the Project Releases box on the right.
XmlLogger for MSBuild
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Implementation of MSBuild Logger that allows writing build logs in XML format suitable for parsing and automated builds.