DBService 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;

namespace haohaoran.Web {     // 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“DBService”。     // 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 DBService.svc 或 DBService.svc.cs，然后开始调试。     public class DBService : IDBService     {         private SqlConnection pSqlConn = null;         private string sSqlConnString = "Data Source=D411-7;Initial Catalog=gis;Integrated Security=True";         public void DoWork()         {         }         public bool CheckUser(string sUser, string sPsd)         {             try             {                 //连接数据库                 if (CheckSQLConn())                 {                     string sql = "select * from dbo.table12 where UserName=‘{0}‘ and UserPsd=‘{1}‘";                     sql = String.Format(sql, sUser, sPsd);                     // 查询数据库里面的记录                     SqlDataAdapter pSQLDataAdapter = new SqlDataAdapter(sql, pSqlConn);                     DataSet pDataSet = new DataSet();

                    pSQLDataAdapter.Fill(pDataSet);

                    int ResultCount = pDataSet.Tables[0].Rows.Count;                     //判断该记录是否存在                     if (ResultCount > 0)                     {                         return true;                     }                     else                     {                         return false;                     }                 }                 return false;             }             catch             {                 return false;             }         }         private bool CheckSQLConn()         {             try             {                 //判断连接是否存在                 if (pSqlConn == null)                 {                     pSqlConn = new SqlConnection();                     pSqlConn.ConnectionString = sSqlConnString;                 }                 //判断连接有没有开启                 if (pSqlConn.State != ConnectionState.Open)                 {                     pSqlConn.Open();                 }                 return true;             }             catch             {                 return false;             }

        }

        public bool creatUser(string suser, string spsd)         {             try             {                 pSqlConn = new SqlConnection(sSqlConnString);                 pSqlConn.Open();                 SqlCommand sq = new SqlCommand();                 sq.Connection = pSqlConn;                 sq.CommandType = CommandType.Text;                 sq.CommandText = string.Format("insert into table12([UserName],[UserPsd]) values (‘" + suser + "‘,‘" + spsd + "‘)");                 sq.ExecuteNonQuery();                 pSqlConn.Close();                 return true;

            }             catch             {                 return false;             }         }

    } }

数据库 DBservices