SqlParameter序列化的问题

SqlParameter remoting 客户端调用服务端方法: DataSet ExecuteProc(string procedurename, SqlParameter[] a);

              调用:  DataSet ds = SqlUtil.ExecuteProc("存储过程名", parameters);//

parameters  为

 SqlParameter[] 类型的实例

              报错: 由于安全限制，无法访问类型 System.Runtime.Remoting.ObjRef。原因是

SqlParameter不能序列化.需要添加一个类来转换.

 添加如下类:

namespace Modal.SerSqlParameter

{

    [Serializable]

    public class SerSqlParameter

    {

        public SerSqlParameter(SqlParameter sPara)

        {

            this.paraName = sPara.ParameterName;

            this.paraLen = sPara.Size;

            this.paraVal = sPara.Value;

            this.sqlDbType = sPara.SqlDbType;

        }



        public SqlParameter ToSqlParameter()

        {

            SqlParameter para = new SqlParameter(this.paraName, this.sqlDbType, this.paraLen);

            para.Value = this.paraVal;

            return para;

        }



        private string paraName = "";

        public string ParaName

        {

            get { return this.paraName; }

            set { this.paraName = value; }



        }



        private int paraLen = 0;

        public int ParaLen

        {



            get { return this.paraLen; }

            set { this.paraLen = value; }

        }



        private object paraVal = null;

        public object ParaVal

        {

            get { return this.paraVal; }

            set { this.paraVal = value; }

        }



        private SqlDbType sqlDbType = SqlDbType.NVarChar;

        public SqlDbType SqlDbType

        {

            get { return this.sqlDbType; }



            set { this.sqlDbType = value; }

        }

    }

}

服务端原来的  

//原来的
public DataSet ExecuteProc(string procedurename, SqlParameter[] arParams)   { 
            DataSet ds = SqlUtil.ExecuteProc(procedurename, arParams);
            return ds;
        }

//修改为
 public DataSet ExecuteProc(string procedurename, IList<SerSqlParameter> arParams)
        {
            SqlParameter[] p = new SqlParameter[arParams.Count];
            for (int i = 0; i < arParams.Count;i++ )
            {
                p[i]=arParams[i].ToSqlParameter();
            }
            DataSet ds = SqlUtil.ExecuteProc(procedurename, p);
            return ds;
        }

客户端修改为 

//原来的调用

DataSet ds = SqlUtil.ExecuteProc("过程名", parameters);



//修改后

 IList<SerSqlParameter> list = new List<SerSqlParameter>();

            foreach (SqlParameter pa in parameters)

            { 

                SerSqlParameter serparam = new SerSqlParameter(pa);

                list.Add(serparam);

            }

 DataSet ds=SqlUtil.ExecuteProc("过程名",list);