Design-Time Breaking Changes Design-time breaking changes impact applications only when they are migrated from Visual Studio .NET 2002 or Visual Studio .NET 2003 to Visual Studio 2005, or when the application is just recompiled on the .NET Framework 2.0. They do not impact applications when they are run against the .NET Framework 2.0 but not recompiled. ASP.NET Design-Time Breaking Changes C++ Design-Time Breaking Changes C# Design-Time Breaking Changes CLR Design-Time Breaking Changes J# Design-Time Breaking Changes System.Data Design-Time Breaking Changes Visual Basic .NET Design-Time Breaking Changes Visual Studio Design-Time Breaking Changes Windows Forms Design-Time Breaking Changes XML and Serialization Design-Time Breaking Changes