/// <summary>
        /// 利用反射调用插件方法
        /// 涂聚文(Geovin Du)
        /// 2019-03-27        /// 
        /// </summary>
        /// <param name="assemblyName">生成类库文件名称</param>
        /// <param name="className">类名</param>
        /// <param name="methodName">方法名</param>
        /// <param name="objParas">参数</param>
        /// <returns>DataTable</returns>
        public DataTable getMethod(string assemblyName, string className, string methodName, params object[] objParas)
        {
            DataTable dt = new DataTable();
            try
            {
                Assembly assembly = Assembly.Load(assemblyName);//生成类库文件名称 放在BIN文件夹下的类库文件DLL的名称
                object obj = assembly.CreateInstance("DuCms.Web.Plugin." + assemblyName + "." + className); //类库名称+类名称
                Type t = obj.GetType();
                //查找匹配的方法
                foreach (MethodInfo m in t.GetMethods(BindingFlags.Instance | BindingFlags.Public))
                {
                    if (m.Name == methodName && m.GetParameters().Length == objParas.Length)
                    {
                        object obj2 = m.Invoke(obj, objParas);
                        dt = obj2 as DataTable;
                        return dt;
                    }
                }
            }
            catch
            {
                //插件方法获取失败
            }
            return dt;
        }

　　调用：

DataTable backList = getMethod("Feedback", "Feedback", "getFeedbackList", 4, "IsLock=0 and SiteId="+Site.Id);

	foreach(DataRow dr in backList.Rows)
	{
         。。。。
        }

　　

Feedback 类

namespace DuCms.Web.Plugin.Feedback
{

    /// <summary>
    /// 
    /// </summary>
    public partial class Feedback : Web.UI.Page
    {
        /// <summary>
        /// 留言分页列表
        /// </summary>
        /// <param name="page_size">页面大小</param>
        /// <param name="page_index">当前页码</param>
        /// <param name="strwhere">查询条件</param>
        /// <param name="totalcount">总记录数</param>
        /// <returns>DateTable</returns>
        public DataTable getFeedbackList(int pageSize, int pageIndex, string strWhere, out int totalCount)
        {
               .....
        }
    
    }
}