解决WCF不能直接序列化SqlParameter类型的问题

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks;

namespace CommonLib.CustomClass
{
    /// <summary>
    /// 方法标记为DataContract约束，属性标记为DataMember
    /// </summary>
    [Serializable]
    [DataContract]
    public class SetSqlParameter
    {
        #region 属性

        /// <summary>
        /// 参数名称
        /// </summary>
        [DataMember]
        private string paraName = "";
        public string ParaName
        {
            get { return this.paraName; }
            set { this.paraName = value; }

        }


        /// <summary>
        /// 参数长度
        /// </summary>
        [DataMember]
        private int paraLength = 0;
        public int ParaLength
        {

            get { return this.paraLength; }
            set { this.paraLength = value; }
        }


        /// <summary>
        /// 参数值
        /// </summary>
        [DataMember]
        private object paraValue = null;
        public object ParaValue
        {
            get { return this.paraValue; }
            set { this.paraValue = value; }
        }


        /// <summary>
        /// 参数类型
        /// </summary>
        [DataMember]
        private SqlDbType paraDbType = SqlDbType.NVarChar;
        public SqlDbType ParaDbType
        {
            get { return this.paraDbType; }

            set { this.paraDbType = value; }
        }

        #endregion

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="sPara"></param>
        public SetSqlParameter(SqlParameter sPara)
        {
            this.paraName = sPara.ParameterName;
            this.paraLength = sPara.Size;
            this.paraValue = sPara.Value;
            this.paraDbType = sPara.SqlDbType;
        }

        /// <summary>
        /// 转换成SqlParameter类型
        /// </summary>
        /// <returns></returns>
        public SqlParameter ConvertToSqlParameter()
        {
            SqlParameter parameter = new SqlParameter(this.paraName, this.paraDbType, this.paraLength);
            parameter.Value = this.paraValue;
            return parameter;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using CommonLib.CustomClass;

namespace WcfServiceDemo
{
    // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的接口名“IMyService”。
    [ServiceContract]
    public interface IMyService
    {
        [OperationContract]
        DataTable ExeceteQuery(string strSQL, params SetSqlParameter[] parameters);
    }
}

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using System.Configuration;
using CommonLib.CustomClass;

namespace WcfServiceDemo
{
    // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码、svc 和配置文件中的类名“MyService”。
    // 注意: 为了启动 WCF 测试客户端以测试此服务，请在解决方案资源管理器中选择 MyService.svc 或 MyService.svc.cs，然后开始调试。
    public class MyService : IMyService
    {

        public DataTable ExeceteQuery(string strSQL, params SetSqlParameter[] parameters)
        {
            DataTable dtReturn = new DataTable();
            dtReturn.TableName = "ExecuteQuery";
            string strCon = ConfigurationManager.ConnectionStrings["HealthHospInfection"].ConnectionString;
            using (SqlConnection conn = new SqlConnection(strCon))
            {
                SqlCommand cmd = new SqlCommand(strSQL, conn);
                conn.Open();
                if (parameters != null)
                {
                    SqlParameter[] para = new SqlParameter[parameters.Length];
                    for (int i = 0; i < parameters.Length; i++)
                    {
                        //把SetSqlParameter类型的数组转换成SqlParameter类型的数组
                        para[i] = parameters[i].ConvertToSqlParameter();
                    }
                    cmd.Parameters.AddRange(para);
                }

                SqlDataAdapter adapter = new SqlDataAdapter(cmd);
                adapter.Fill(dtReturn);
            }
            return dtReturn;
        }
    }
}

using CommonLib.CustomClass;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;


namespace winClient
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btn_GetData_Click(object sender, EventArgs e)
        {

            string strSQL = " SELECT * FROM BaseSetMainInfo WHERE TypeCode=@TypeCode ";

            //定义SqlParameter
            SqlParameter para = new SqlParameter("@TypeCode", SqlDbType.Int);
            para.Value = 1;

            //定义SetSqlParameter类型的数组
            SetSqlParameter[] paras = new SetSqlParameter[] {
                new SetSqlParameter(para)
            };

            //实例化WCF服务
            ServiceReference.MyServiceClient client=new ServiceReference.MyServiceClient();
            //调用WCF服务提供的方法
            DataTable dt = client.ExeceteQuery(strSQL, paras);
            this.dataGridView1.DataSource = dt;

        }
    }
}