我正在尝试从我的网络服务

Question

我有一个MS-SQL服务器，我在C＃中创建了一个不能正确检索一些法语名称的Web服务。例如，我为“é”和“è”获得了奇怪的角色组合。我想知道我是否需要使用另一个库，或直接提到一个特殊的编码。谢谢！这是我的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Web.Script.Serialization;
using System.Collections;
using Newtonsoft.Json;
using System.IO;
using System.Threading.Tasks;
using System.Text;
using System.Security.Cryptography;

namespace WebApplication
{
    [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 WebService1 : System.Web.Services.WebService
    {
        [WebMethod]
        public void getTotalForDateIntervalEmployees(string startDate, string endDate)
        {
            string cs = ConfigurationManager.ConnectionStrings["vetDatabase"].ConnectionString;
            List<Employee> master = new List<Employee>();

            using (SqlConnection con = new SqlConnection(cs))
            {
                SqlCommand cmd = new SqlCommand("CountAndGroupByObservations", con);
                cmd.CommandType = CommandType.StoredProcedure;

                //Linking SQL parameters with webmethod parameters
                SqlParameter param1 = new SqlParameter()
                {
                    ParameterName = "@startDate",
                    Value = startDate
                };

                SqlParameter param2 = new SqlParameter()
                {
                    ParameterName = "@endDate",
                    Value = endDate
                };

                cmd.Parameters.Add(param1);
                cmd.Parameters.Add(param2);
                con.Open();

                SqlDataReader rdr = cmd.ExecuteReader();
                while (rdr.Read())
                {
                    Employee employee = new Employee();

                    employee.building = rdr["Building"].ToString();
                    employee.name = rdr["reportedBy"].ToString();
                    employee.total = Convert.ToInt32(rdr["total"]);

                    master.Add(employee);
                }
            }
            JavaScriptSerializer js = new JavaScriptSerializer();

            Context.Response.Write(js.Serialize(master));
        }
}