我已经使用 vs2010 创建了一个项目,现在我正在使用 vs2012 但我收到错误
Error 1 The type 'Microsoft.Practices.EnterpriseLibrary.Common.Instrumentation.IInstrumentationEventProvider' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.Practices.EnterpriseLibrary.Common, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. C:\Users\dcss3\Desktop\21nov2012\NuggettsCloud\AppDAL\AssetCardDAL.cs 103 18 AppDAL