需要有一個工具類：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
using System.Data;
using System.Collections;
using MySql.Data.MySqlClient;
using MySql.Data.Types;
using System.Configuration;
using System.IO;



public abstract class MySqlHelper
{
    //Get the database connectionstring, which are static variables and readonly, all project documents can be used directly, but can not modify it 
    //the database connectionString 
    //public static readonly string connectionStringManager = ConfigurationManager.ConnectionStrings["MYSQLConnectionString"].ConnectionString;
    public static string ConnectionStringManager
    {
        get { return connectionStringManager; }
    }



    //This connectionString for the local test
    public static readonly string connectionStringManager = "Server=xxxxxxx;Database=91bx;Uid=xxxx;Pwd=xxxxx;pooling=false;charset=utf8"; //System.Configuration.ConfigurationManager.AppSettings["MySQLConnString"];
    //ConfigurationManager.ConnectionStrings["MySQLConnString"].ConnectionString;

    //hashtable to store the parameter information, the hash table can store any type of argument 
    //Here the hashtable is static types of static variables, since it is static, that is a definition of global use.
    //All parameters are using this hash table, how to ensure that others in the change does not affect their time to read it
    //Before ,the method can use the lock method to lock the table, does not allow others to modify.when it has readed then  unlocked table.
    //Now .NET provides a HashTable's Synchronized methods to achieve the same function, no need to manually lock, completed directly by the system framework 
    private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());

    /// <summary>
    /// Execute a SqlCommand command that does not return value, by appointed and specified connectionstring 
    /// The parameter list using parameters that in array forms
    /// </summary>
    /// <remarks>
    /// Usage example: 
    /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure,
    /// "PublishOrders", new MySqlParameter("@prodid", 24));
    /// </remarks>
    /// <param name="connectionString">a valid database connectionstring</param>
    /// <param name="cmdType">MySqlCommand command type (stored procedures, T-SQL statement, and so on.) </param>
    /// <param name="cmdText">stored procedure name or T-SQL statement</param>
    /// <param name="commandParameters">MySqlCommand to provide an array of parameters used in the list</param>
    /// <returns>Returns a value that means number of rows affected/returns>
    public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
    {
        MySqlCommand cmd = new MySqlCommand();

        using (MySqlConnection conn = new MySqlConnection(connectionString))
        {
            PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
            int val = cmd.ExecuteNonQuery();
            cmd.Parameters.Clear();
            return val;
        }
    }

    /// <summary>
    /// Execute a SqlCommand command that does not return value, by appointed and specified connectionstring 
    /// The parameter list using parameters that in array forms
    /// </summary>
    /// <remarks>
    /// Usage example: 
    /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure,
    /// "PublishOrders", new MySqlParameter("@prodid", 24));
    /// </remarks>
    /// <param name="cmdType">MySqlCommand command type (stored procedures, T-SQL statement, and so on.) </param>
    /// <param name="connectionString">a valid database connectionstring</param>
    /// <param name="cmdText">stored procedure name or T-SQL statement</param>
    /// <param name="commandParameters">MySqlCommand to provide an array of parameters used in the list</param>
    /// <returns>Returns true or false </returns>
    public static bool ExecuteNonQuery(CommandType cmdType, string connectionString, string cmdText, params MySqlParameter[] commandParameters)
    {
        MySqlCommand cmd = new MySqlCommand();

        using (MySqlConnection conn = new MySqlConnection(connectionString))
        {
            PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
            try
            {
                int val = cmd.ExecuteNonQuery();
                return true;
            }
            catch
            {
                return false;
            }
            finally
            {
                cmd.Parameters.Clear();
            }
        }
    }
    /// <summary>
    /// Execute a SqlCommand command that does not return value, by appointed and specified connectionstring 
    /// Array of form parameters using the parameter list 
    /// </summary>
    /// <param name="conn">connection</param>
    /// <param name="cmdType">MySqlCommand command type (stored procedures, T-SQL statement, and so on.)</param>
    /// <param name="cmdText">stored procedure name or T-SQL statement</param>
    /// <param name="commandParameters">MySqlCommand to provide an array of parameters used in the list</param>
    /// <returns>Returns a value that means number of rows affected</returns>
    public static int ExecuteNonQuery(MySqlConnection conn, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
    {
        MySqlCommand cmd = new MySqlCommand();
        PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
        int val = cmd.ExecuteNonQuery();
        cmd.Parameters.Clear();
        return val;
    }

    /// <summary>
    /// Execute a SqlCommand command that does not return value, by appointed and specified connectionstring 
    /// Array of form parameters using the parameter list 
    /// </summary>
    /// <param name="conn">sql Connection that has transaction</param>
    /// <param name="cmdType">SqlCommand command type (stored procedures, T-SQL statement, and so on.)</param>
    /// <param name="cmdText">stored procedure name or T-SQL statement</param>
    /// <param name="commandParameters">MySqlCommand to provide an array of parameters used in the list</param>
    /// <returns>Returns a value that means number of rows affected </returns>
    public static int ExecuteNonQuery(MySqlTransaction trans, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
    {
        MySqlCommand cmd = new MySqlCommand();
        PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);
        int val = cmd.ExecuteNonQuery();
        cmd.Parameters.Clear();
        return val;
    }

    /// <summary>
    /// Call method of sqldatareader to read data
    /// </summary>
    /// <param name="connectionString">connectionstring</param>
    /// <param name="cmdType">command type, such as using stored procedures: CommandType.StoredProcedure</param>
    /// <param name="cmdText">stored procedure name or T-SQL statement</param>
    /// <param name="commandParameters">parameters</param>
    /// <returns>SqlDataReader type of data collection</returns>
    public static MySqlDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
    {
        MySqlCommand cmd = new MySqlCommand();
        MySqlConnection conn = new MySqlConnection(connectionString);

        // we use a try/catch here because if the method throws an exception we want to 
        // close the connection throw code, because no datareader will exist, hence the 
        // commandBehaviour.CloseConnection will not work
        try
        {
            PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
            MySqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
            cmd.Parameters.Clear();
            return rdr;
        }
        catch
        {
            conn.Close();
            throw;
        }
    }

    /// <summary>
    /// use the ExectueScalar to read a single result
    /// </summary>
    /// <param name="connectionString">connectionstring</param>
    /// <param name="cmdType">command type, such as using stored procedures: CommandType.StoredProcedure</param>
    /// <param name="cmdText">stored procedure name or T-SQL statement</param>
    /// <param name="commandParameters">parameters</param>
    /// <returns>a value in object type</returns>
    public static object ExecuteScalar(string connectionString, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
    {
        MySqlCommand cmd = new MySqlCommand();

        using (MySqlConnection connection = new MySqlConnection(connectionString))
        {
            PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
            object val = cmd.ExecuteScalar();
            cmd.Parameters.Clear();
            return val;
        }
    }

    public static DataSet GetDataSet(string connectionString, string cmdText, params MySqlParameter[] commandParameters)
    {
        DataSet retSet = new DataSet();
        using (MySqlDataAdapter msda = new MySqlDataAdapter(cmdText, connectionString))
        {
            msda.Fill(retSet);
        }
        return retSet;
    }

    /// <summary>
    /// cache the parameters in the HashTable
    /// </summary>
    /// <param name="cacheKey">hashtable key name</param>
    /// <param name="commandParameters">the parameters that need to cached</param>
    public static void CacheParameters(string cacheKey, params MySqlParameter[] commandParameters)
    {
        parmCache[cacheKey] = commandParameters;
    }

    /// <summary>
    /// get parameters in hashtable by cacheKey
    /// </summary>
    /// <param name="cacheKey">hashtable key name</param>
    /// <returns>the parameters</returns>
    public static MySqlParameter[] GetCachedParameters(string cacheKey)
    {
        MySqlParameter[] cachedParms = (MySqlParameter[])parmCache[cacheKey];

        if (cachedParms == null)
            return null;

        MySqlParameter[] clonedParms = new MySqlParameter[cachedParms.Length];

        for (int i = 0, j = cachedParms.Length; i < j; i++)
            clonedParms[i] = (MySqlParameter)((ICloneable)cachedParms[i]).Clone();

        return clonedParms;
    }

    /// <summary>
    ///Prepare parameters for the implementation of the command
    /// </summary>
    /// <param name="cmd">mySqlCommand command</param>
    /// <param name="conn">database connection that is existing</param>
    /// <param name="trans">database transaction processing </param>
    /// <param name="cmdType">SqlCommand command type (stored procedures, T-SQL statement, and so on.) </param>
    /// <param name="cmdText">Command text, T-SQL statements such as Select * from Products</param>
    /// <param name="cmdParms">return the command that has parameters</param>
    private static void PrepareCommand(MySqlCommand cmd, MySqlConnection conn, MySqlTransaction trans, CommandType cmdType, string cmdText, MySqlParameter[] cmdParms)
    {
        if (conn.State != ConnectionState.Open)
            conn.Open();

        cmd.Connection = conn;
        cmd.CommandText = cmdText;

        if (trans != null)
            cmd.Transaction = trans;

        cmd.CommandType = cmdType;

        if (cmdParms != null)
            foreach (MySqlParameter parm in cmdParms)
                cmd.Parameters.Add(parm);
    }
    #region parameters
    /// <summary>
    /// Set parameters
    /// </summary>
    /// <param name="ParamName">parameter name</param>
    /// <param name="DbType">data type</param>
    /// <param name="Size">type size</param>
    /// <param name="Direction">input or output</param>
    /// <param name="Value">set the value</param>
    /// <returns>Return parameters that has been assigned</returns>
    public static MySqlParameter CreateParam(string ParamName, MySqlDbType DbType, Int32 Size, ParameterDirection Direction, object Value)
    {
        MySqlParameter param;


        if (Size > 0)
        {
            param = new MySqlParameter(ParamName, DbType, Size);
        }
        else
        {

            param = new MySqlParameter(ParamName, DbType);
        }


        param.Direction = Direction;
        if (!(Direction == ParameterDirection.Output && Value == null))
        {
            param.Value = Value;
        }


        return param;
    }

    /// <summary>
    /// set Input parameters
    /// </summary>
    /// <param name="ParamName">parameter names, such as:@ id </param>
    /// <param name="DbType">parameter types, such as: MySqlDbType.Int</param>
    /// <param name="Size">size parameters, such as: the length of character type for the 100</param>
    /// <param name="Value">parameter value to be assigned</param>
    /// <returns>Parameters</returns>
    public static MySqlParameter CreateInParam(string ParamName, MySqlDbType DbType, int Size, object Value)
    {
        return CreateParam(ParamName, DbType, Size, ParameterDirection.Input, Value);
    }

    /// <summary>
    /// Output parameters 
    /// </summary>
    /// <param name="ParamName">parameter names, such as:@ id</param>
    /// <param name="DbType">parameter types, such as: MySqlDbType.Int</param>
    /// <param name="Size">size parameters, such as: the length of character type for the 100</param>
    /// <param name="Value">parameter value to be assigned</param>
    /// <returns>Parameters</returns>
    public static MySqlParameter CreateOutParam(string ParamName, MySqlDbType DbType, int Size)
    {
        return CreateParam(ParamName, DbType, Size, ParameterDirection.Output, null);
    }

    /// <summary>
    /// Set return parameter value 
    /// </summary>
    /// <param name="ParamName">parameter names, such as:@ id</param>
    /// <param name="DbType">parameter types, such as: MySqlDbType.Int</param>
    /// <param name="Size">size parameters, such as: the length of character type for the 100</param>
    /// <param name="Value">parameter value to be assigned<</param>
    /// <returns>Parameters</returns>
    public static MySqlParameter CreateReturnParam(string ParamName, MySqlDbType DbType, int Size)
    {
        return CreateParam(ParamName, DbType, Size, ParameterDirection.ReturnValue, null);
    }

    /// <summary>
    /// Generate paging storedProcedure parameters
    /// </summary>
    /// <param name="CurrentIndex">CurrentPageIndex</param>
    /// <param name="PageSize">pageSize</param>
    /// <param name="WhereSql">query Condition</param>
    /// <param name="TableName">tableName</param>
    /// <param name="Columns">columns to query</param>
    /// <param name="Sort">sort</param>
    /// <returns>MySqlParameter collection</returns>
    public static MySqlParameter[] GetPageParm(int CurrentIndex, int PageSize, string WhereSql, string TableName, string Columns, Hashtable Sort)
    {
        MySqlParameter[] parm = { 
                                   MySqlHelper.CreateInParam("@CurrentIndex",  MySqlDbType.Int32,      4,      CurrentIndex    ),
                                   MySqlHelper.CreateInParam("@PageSize",      MySqlDbType.Int32,      4,      PageSize        ),
                                   MySqlHelper.CreateInParam("@WhereSql",      MySqlDbType.VarChar,  2500,    WhereSql        ),
                                   MySqlHelper.CreateInParam("@TableName",     MySqlDbType.VarChar,  20,     TableName       ),
                                   MySqlHelper.CreateInParam("@Column",        MySqlDbType.VarChar,  2500,    Columns         ),
                                   MySqlHelper.CreateInParam("@Sort",          MySqlDbType.VarChar,  50,     GetSort(Sort)   ),
                                   MySqlHelper.CreateOutParam("@RecordCount",  MySqlDbType.Int32,      4                       )
                                   };
        return parm;
    }
    /// <summary>
    /// Statistics data that in table
    /// </summary>
    /// <param name="TableName">table name</param>
    /// <param name="Columns">Statistics column</param>
    /// <param name="WhereSql">conditions</param>
    /// <returns>Set of parameters</returns>
    public static MySqlParameter[] GetCountParm(string TableName, string Columns, string WhereSql)
    {
        MySqlParameter[] parm = { 
                                   MySqlHelper.CreateInParam("@TableName",     MySqlDbType.VarChar,  20,     TableName       ),
                                   MySqlHelper.CreateInParam("@CountColumn",  MySqlDbType.VarChar,  20,     Columns         ),
                                   MySqlHelper.CreateInParam("@WhereSql",      MySqlDbType.VarChar,  250,    WhereSql        ),
                                   MySqlHelper.CreateOutParam("@RecordCount",  MySqlDbType.Int32,      4                       )
                                   };
        return parm;
    }
    /// <summary>
    /// Get the sql that is Sorted 
    /// </summary>
    /// <param name="sort"> sort column and values</param>
    /// <returns>SQL sort string</returns>
    private static string GetSort(Hashtable sort)
    {
        string str = "";
        int i = 0;
        if (sort != null && sort.Count > 0)
        {
            foreach (DictionaryEntry de in sort)
            {
                i++;
                str += de.Key + " " + de.Value;
                if (i != sort.Count)
                {
                    str += ",";
                }
            }
        }
        return str;
    }

    /// <summary>
    /// execute a trascation include one or more sql sentence(author:donne yin)
    /// </summary>
    /// <param name="connectionString"></param>
    /// <param name="cmdType"></param>
    /// <param name="cmdTexts"></param>
    /// <param name="commandParameters"></param>
    /// <returns>execute trascation result(success: true | fail: false)</returns>
    public static bool ExecuteTransaction(string connectionString, CommandType cmdType, string[] cmdTexts, params MySqlParameter[][] commandParameters)
    {
        MySqlConnection myConnection = new MySqlConnection(connectionString);       //get the connection object
        myConnection.Open();                                                        //open the connection
        MySqlTransaction myTrans = myConnection.BeginTransaction();                 //begin a trascation
        MySqlCommand cmd = new MySqlCommand();
        cmd.Connection = myConnection;
        cmd.Transaction = myTrans;

        try
        {
            for (int i = 0; i < cmdTexts.Length; i++)
            {
                PrepareCommand(cmd, myConnection, null, cmdType, cmdTexts[i], commandParameters[i]);
                cmd.ExecuteNonQuery();
                cmd.Parameters.Clear();
            }
            myTrans.Commit();
        }
        catch
        {
            myTrans.Rollback();
            return false;
        }
        finally
        {
            myConnection.Close();
        }
        return true;
    }
    #endregion
}
 

常用操作：

using MySql.Data.MySqlClient;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Web;

namespace wolame
{
    public class UserManage
    {
        //傳送簡訊驗證碼以登入，順便自動註冊
        public string login_by_code(string tele)
        {
            MyLog.WriteLog("tele:" + tele);
            string res = string.Empty;

            Random ran = new Random();
            int RandKey = ran.Next(1000, 9999);
            string code = RandKey.ToString();

            sendmsg send = new sendmsg();
            res = send.send(tele, code);
            //res = "{\"reason\": \"簡訊傳送成功\",\"result\": {\"count\": 1,\"fee\": 1,\"sid\": \"17110219460122891\"},\"error_code\": 0}";

            sendmsgresult rs = new sendmsgresult();
            JObject job = JObject.Parse(res);
            if(job == null)
            {
                return "parse error!";
            }

            rs.reason = job["reason"].ToString();
            rs.error_code = job["error_code"].ToString();
            rs.result.count = ((JObject)job["result"])["count"].ToString();
            rs.result.fee = ((JObject)job["result"])["fee"].ToString();
            rs.result.sid = ((JObject)job["result"])["sid"].ToString();

            //儲存結果到資料庫
            if (rs.error_code.Equals("0"))//成功
            {
                MyLog.WriteLog("code:" + code);
                save_and_update(tele, code);
            }

            return res;
        }

        public void save_and_update(string tele, string code)
        {
            MyLog.WriteLog("save_and_update:" + tele);

            
            string uid = get_uid_by_tele(tele);
            if(uid==null || uid.Length<=0)
            {
                MyLog.WriteLog("createuser:" + tele);
                createuser(tele);
            }
             


            //更新驗證碼
            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = @"update wolame_user set  
 
[email protected]_authcode where [email protected]_tele;";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_authcode", code),
                new MySqlParameter("@v_tele",tele),
                };


            MySqlHelper.ExecuteNonQuery(CommandType.Text, MySqlHelper.ConnectionStringManager, sqlcom.CommandText, commandParameters);

        }

        public void createuser(string tele)
        {
            MyLog.WriteLog("enter createuser:" + tele);

            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = "insert into wolame_user (uid, createdate,tele,pswd) values(@v_uid, @v_createdate,@v_tele,@v_pswd);";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_uid", 0),
                new MySqlParameter("@v_createdate",DateTime.Now.ToString()),
                new MySqlParameter("@v_tele",tele),
                new MySqlParameter("@v_pswd",""),
                };

            MySqlHelper.ExecuteNonQuery(CommandType.Text, MySqlHelper.ConnectionStringManager, sqlcom.CommandText, commandParameters);
        }



        //獲取驗證碼
        public string getcode(string tele)
        {
            string uid = string.Empty;

            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = @"select authcode from wolame_user where 
 
[email protected]_tele";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_tele", tele),
                };


            MySqlDataReader reader = MySqlHelper.ExecuteReader(MySqlHelper.ConnectionStringManager, CommandType.Text, sqlcom.CommandText, commandParameters);
            if (reader.Read() == true)
            {
                uid = reader["authcode"].ToString();
            }
            return uid;
        }



        //根據使用者手機號獲取uid
        public string get_uid_by_tele(string tele)
        {
            string uid = string.Empty;

            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = @"select uid from wolame_user where [email protected]_tele";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_tele", tele),
                };


            MySqlDataReader reader = MySqlHelper.ExecuteReader(MySqlHelper.ConnectionStringManager, CommandType.Text, sqlcom.CommandText, commandParameters);
            if (reader.Read() == true)
            {
                uid = reader["uid"].ToString();
            }
            return uid;
        }

        //使用者註冊，通過手機號和密碼
        public string register(string json)
        {
            string result = string.Empty;
            register_result res = new register_result();
            res.result = "0";
            res.uid = "0";
            res.ret_msg = "";

            JObject obj = JObject.Parse(json);
            if(obj == null)
            {
                return JsonConvert.SerializeObject(res);
            }

            string tele = obj["tele"].ToString();
            string pswd = obj["pswd"].ToString();

            //byte[] bytes = Convert.FromBase64String(pswd);
            //pswd = Encoding.Default.GetString(bytes);


            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = "insert into wolame_user (uid, createdate,tele,pswd) values(@v_uid, @v_createdate,@v_tele,@v_pswd);";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_uid", 0),
                new MySqlParameter("@v_createdate",DateTime.Now.ToString()),
                new MySqlParameter("@v_tele",tele),
                new MySqlParameter("@v_pswd",pswd),
                };

            bool bRet = MySqlHelper.ExecuteNonQuery(CommandType.Text, MySqlHelper.ConnectionStringManager, sqlcom.CommandText, commandParameters);
            if (bRet)
            {
                res.uid = get_uid_by_tele(tele);
                res.result = "1";
            }

            result = JsonConvert.SerializeObject(res);
            return result;
        }


        //使用者通過密碼登入
        public string login_by_pswd(string json)
        {
            string uid = string.Empty;

            JObject obj = JObject.Parse(json);
            if (obj == null)
            {
                return "";
            }

            string tele = obj["tele"].ToString();
            string pswd = obj["pswd"].ToString();


            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = @"select uid from wolame_user where [email protected]_tele and [email protected]_pswd";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_tele", tele),
                new MySqlParameter("@v_pswd", pswd),
                };


            MySqlDataReader reader = MySqlHelper.ExecuteReader(MySqlHelper.ConnectionStringManager, CommandType.Text, sqlcom.CommandText, commandParameters);
            if (reader.Read() == true)
            {
                update_last_active_time(tele);
                uid = reader["uid"].ToString();
            }


            return uid;
        }


        public string setpassword(string json)
        {
            string result = string.Empty;
            result = "0";
            JObject obj = JObject.Parse(json);
            if (obj == null)
            {
                return "0";
            }

            string tele = obj["tele"].ToString();
            string pswd = obj["pswd"].ToString();
            string name = obj["name"].ToString();
            string sex = obj["sex"].ToString();

            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = @"update wolame_user set [email protected]_pswd,[email protected]_name,[email protected]_sex where [email protected]_tele;";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_pswd", pswd),
                new MySqlParameter("@v_name",name),
                new MySqlParameter("@v_sex",sex),
                new MySqlParameter("@v_tele",tele),
                };


            bool bRet = MySqlHelper.ExecuteNonQuery(CommandType.Text, MySqlHelper.ConnectionStringManager, sqlcom.CommandText, commandParameters);
            if(bRet)
            {
                result = "1";
            }

            return result;
        }



        public void update_last_active_time(string tele)
        {
            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = @"update wolame_user set  [email protected]_lastactive where [email protected]_tele;";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_lastactive",DateTime.Now.ToString()),
                new MySqlParameter("@v_tele",tele),
                };


            MySqlHelper.ExecuteNonQuery(CommandType.Text, MySqlHelper.ConnectionStringManager, sqlcom.CommandText, commandParameters);
        }



        //使用者通過密碼登入
        public string reset_pswd(string json)
        {
            string res = string.Empty;

            return res;
        }


        public string getuser(string tele)
        {
            string result = string.Empty;

            MySqlCommand sqlcom = new MySqlCommand();
            sqlcom.CommandText = @"select * from wolame_user where [email protected]_tele";

            MySqlParameter[] commandParameters = new MySqlParameter[]{
                new MySqlParameter("@v_tele", tele),
                };

            MySqlDataReader reader = MySqlHelper.ExecuteReader(MySqlHelper.ConnectionStringManager, CommandType.Text, sqlcom.CommandText, commandParameters);
            if (reader.Read() == true)
            {
                userinfo user = new userinfo();
                user.uid = reader["uid"].ToString();
                user.createdate = reader["createdate"].ToString();
                user.tele = reader["tele"].ToString();
                user.name = reader["name"].ToString();
                user.pswd = reader["pswd"].ToString();
                user.sex = reader["sex"].ToString();
                user.pid = reader["pid"].ToString();
                user.level = reader["level"].ToString();
                user.type = reader["type"].ToString();

                user.lastactive = reader["lastactive"].ToString();
                user.token = reader["token"].ToString();
                user.authcode = reader["authcode"].ToString();

                result = JsonConvert.SerializeObject(user);
            }

            return result;
        }


    }
}

附帶一個.net寫日誌的類：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using System.IO;

namespace BgService
{
    public class MyLog
    {
        public static void WriteLog(string msg)
        {
            string date = DateTime.Now.ToString("yyyyMMdd");
            string path = HttpContext.Current.Server.MapPath("./log/");
            //判斷Log目錄是否存在，不存在則建立
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            path = path + date + ".log";
            //使用StreamWriter寫日誌，包含時間，錯誤路徑，錯誤資訊
            using (StreamWriter sw = File.AppendText(path))
            {
                sw.WriteLine("-----------------" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "-----------------");
               // sw.WriteLine(HttpContext.Current.Request.Url.ToString());
                sw.WriteLine(msg);
                sw.WriteLine("\r\n");
            }
        }
    }
}