I hava some question need help when I learn the Professional C# 4 and .NET 4 .The Chart 34 ,I hava add the UDT and in the SQLSERVER 2005 has the UDT ,but when I used It was wrong it throw the fileNotFoundException 未能加载文件或程序集“SqlTypes, Version=1.0.3620.17760, Culture=neutral, PublicKeyToken=null”或它的某一个依赖项。系统找不到指定的文件。at first I think it's My code has some wrong ,but when I run the code of the CD ,It still throw the same Exception ,I need some help. please give me some solutions ,thanks