属性控制类

 [AttributeUsage(AttributeTargets.Class, Inherited =false)]
    [ComVisible(true)]
    publicclass ClassKeyAttribute : Attribute
    {
        public ClassKeyAttribute()
        {

        }
        public ClassKeyAttribute(string TableName)
        {
            this.TableName = TableName;
        }
        publicstring TableName { get; set; }

        publicstaticstring GetTableName<T>()
        {
            T model = (T)Activator.CreateInstance(typeof(T));
            return GetTableName(model);
        }

        publicstaticstring GetTableName(object model)
        {
            object[] attributes = model.GetType().GetCustomAttributes(false);
            foreach (object o in attributes)
            {
                if (o is ClassKeyAttribute)
                {
                    ClassKeyAttribute attr = (ClassKeyAttribute)o;
                    return attr.TableName;
                }
            }
            return"";
        }
    }