Silverlight 调用WebService 服务查询数据库

          using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Services;

using System.Data;

using MySql.Data.MySqlClient;

using System.Text;

using UPPC.Config;

using System.Configuration;

using System.Web.SessionState;

using System.Xml.Serialization;

namespace UPPC.ClientBin

{

    /// <summary>

    /// Summary description for EmployeesInfoWebService

    /// </summary>

    [WebService(Namespace = "http://tempuri.org/")]

    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

    [System.ComponentModel.ToolboxItem(false)]

    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.

    // [System.Web.Script.Services.ScriptService]

    public class EmployeesInfoWebService : System.Web.Services.WebService

    {     

        [WebMethod]

        public bool GetIfNeedCompare(string ChartCmd)

        {

            bool IfneedCompare = false;

            MySqlCommand Cmd = new MySqlCommand();

            string ConnectionString = ConfigurationManager.ConnectionStrings["uppc_monitoring_systemConnectionString"].ConnectionString;  //WebConfig        connectionStrings

            MySqlConnection Conn = new MySqlConnection(ConnectionString);

            Conn.Open();

            Cmd.Connection = Conn;

            Cmd.CommandTimeout = 15;

            Cmd.CommandType = System.Data.CommandType.Text;

            Cmd.CommandText = ChartCmd;

            MySqlDataReader reader1 = Cmd.ExecuteReader();

            reader1.Read();

            if (reader1.HasRows)

            {

                IfneedCompare = reader1.GetBoolean("Need_Compare");

            }

            reader1.Close();

            Conn.Close();

            return IfneedCompare;

        }

    }

}