工厂模式，返回实例为Null

Question

private static readonly string AssemblyPath=ConfigurationManager.AppSettings["DAL"]; public static ERPSys.IDAL.IAdmin CreateAdmin()  {                      string ClassNamespace = AssemblyPath ".Admin";           IDAL.IAdmin admin=ERPSys.IDAL.IAdmin)Assembly.Load(AssemblyPath).CreateInstance(ClassNamespace));            return admin; }

Answer 1

反射不成功

Assembly.Load(AssemblyPath).CreateInstance

检查assemblypath是否存在，这个asebmlby是否部署，然后查看ClassNamespace是否在该dll中包含