Example #1
0
 /// <summary>
 ///执行一个不需要返回值的SqlCommand命令,通过指定专用的连接字符串。
 /// 使用参数数组形式提供参数列表
 /// </summary>
 /// <remarks>
 /// 使用示例:
 ///  int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
 /// </remarks>
 /// <param name="connectionString">一个有效的数据库连接字符串</param>
 /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
 /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
 /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
 /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
 public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
 {
     try
     {
         iRedoTimes++;
         Mylog.Info(cmdText);
         SqlCommand cmd = new SqlCommand();
         using (SqlConnection conn = new SqlConnection(connectionString))
         {
             //通过PrePareCommand方法将参数逐个加入到SqlCommand的参数集合中
             PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
             int val = cmd.ExecuteNonQuery();
             //清空SqlCommand中的参数列表
             cmd.Parameters.Clear();
             return(val);
         }
     }
     catch (Exception ex)
     {
         Mylog.Error(ex.Message);
         if (ex.ToString().Contains("死锁") || ex.ToString().Contains("无法访问") || ex.ToString().Contains("超时") || ex.ToString().Contains("传输级"))
         {
             if (iRedoTimes % 10 != 0)
             {
                 return(ExecuteNonQuery(connectionString, cmdType, cmdText, commandParameters));
             }
             // MessageBox.Show("网络异常,点击确定后系统自动重试。如果此异常长时间没有解除,请检查设备或者联系13164846310。\r\b" + ex.ToString().Substring(0, 200));
         }
         else
         {
             Mylog.Error(ex.ToString());
         }
         return(0);
     }
 }
Example #2
0
    /// <summary>
    /// 执行事务
    /// </summary>
    /// <param name="connectionString">一个有效的数据库连接字符串</param>
    /// <param name="cmdType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
    /// <returns>return a bool</returns>
    public static bool ExecuteSqlTran(string connectionString, string strSQL)
    {
        char[] de = { ';' };
        string strChildSQL;
        int    i;

        string[]       strSQLArr  = strSQL.Split(de);
        bool           IsControll = true;
        SqlConnection  conn       = new SqlConnection(connectionString);
        SqlCommand     myCommand  = new SqlCommand();
        SqlTransaction myTrans    = null;

        Mylog.Info(strSQL);
        try
        {
            conn.Open();

            myTrans = conn.BeginTransaction();
            myCommand.Connection  = conn;
            myCommand.Transaction = myTrans;
            for (i = 0; i < strSQLArr.Length; i++)
            {
                strChildSQL           = strSQLArr[i];
                myCommand.CommandText = strChildSQL;
                myCommand.ExecuteNonQuery();
            }
            myTrans.Commit();
            IsControll = true;
        }
        catch (Exception ex)
        {
            Mylog.Error(ex.Message);
            try
            {
                IsControll = false;
                if (myTrans != null)
                {
                    myTrans.Rollback();
                }

                //ExecuteSqlTran(connectionString, strSQL);
            }
            catch (SqlException sex)
            {
                Mylog.Error(sex.Message);
            }
        }
        finally
        {
            conn.Close();
        }
        return(IsControll);
    }
Example #3
0
    /// <summary>
    /// 执行一条返回结果集的SqlCommand命令,通过专用的连接字符串。
    /// 使用参数数组提供参数
    /// </summary>
    /// <remarks>
    /// 使用示例:
    ///  SqlDataReader r = ExecuteReader(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
    /// </remarks>
    /// <param name="connectionString">一个有效的数据库连接字符串</param>
    /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
    /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
    /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
    /// <returns>返回一个包含结果的SqlDataReader</returns>
    public static SqlDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
    {
        SqlCommand    cmd  = new SqlCommand();
        SqlConnection conn = new SqlConnection(connectionString);

        // 在这里使用try/catch处理是因为如果方法出现异常,则SqlDataReader就不存在,
        //CommandBehavior.CloseConnection的语句就不会执行,触发的异常由catch捕获。
        //关闭数据库连接,并通过throw再次引发捕捉到的异常。
        try
        {
            PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
            SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
            cmd.Parameters.Clear();
            return(rdr);
        }
        catch (Exception ex)
        {
            Mylog.Error(ex.Message);
            conn.Close();
            throw;
        }
    }
Example #4
0
 public string dowimg(string serverId)
 {
     try
     {
         APPIdAndSecret App          = new APPIdAndSecret();
         string         access_token = TokenMannger.Instance.GetToken("test", App.AppID, App.AppSecret);
         string         path         = "https://api.weixin.qq.com/cgi-bin/media/get?access_token=" + access_token + "&media_id=" + serverId;
         WebClient      wc           = new WebClient();
         string         name         = serverId + ".jpg";
         var            photofolder  = Server.MapPath("~/Images/");
         if (!Directory.Exists(photofolder))
         {
             Directory.CreateDirectory(photofolder);
         }
         if ((System.IO.File.Exists(photofolder + name)))
         {
             return(name);
         }
         Mylog.Error(path + " : " + photofolder + "\\" + name);
         wc.Credentials = CredentialCache.DefaultCredentials; //获取或设置用于向Internet资源的请求进行身份验证的网络凭据
         Byte[] pageData = wc.DownloadData(path);             //从指定网站下载数据
         string pageHtml = Encoding.UTF8.GetString(pageData); //如果获取网站页面采用的是GB2312
         if (!pageHtml.Contains("errmsg"))
         {
             wc.DownloadFile(path, photofolder + "\\" + name);//将图片拷贝到
             return(name);
         }
         else
         {
             Mylog.Error(pageHtml);
             return("");
         }
     }
     catch (Exception ex)
     {
         Mylog.Error(ex.Message);
         throw;
     }
 }
Example #5
0
    /// <summary>
    /// return a dataset
    /// </summary>
    /// <param name="connectionString">一个有效的数据库连接字符串</param>
    /// <param name="cmdType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
    /// <param name="cmdText">存储过程的名字或者 T-SQL 语句</param>
    /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
    /// <returns>return a dataset</returns>

    public static DataSet ExecuteDataSet(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
    {
        SqlConnection conn = new SqlConnection(connectionString);
        SqlCommand    cmd  = new SqlCommand();

        Mylog.Info(cmdText);
        try
        {
            PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
            SqlDataAdapter da = new SqlDataAdapter();
            DataSet        ds = new DataSet();
            da.SelectCommand = cmd;
            da.Fill(ds);
            return(ds);
        }
        catch (Exception ex)
        {
            Mylog.Error(ex.Message);
            if (ex.ToString().Contains("死锁") || ex.ToString().Contains("无法访问") || ex.ToString().Contains("超时") || ex.ToString().Contains("传输级"))
            {
                if (iRedoTimes % 10 != 0)
                {
                    return(ExecuteDataSet(connectionString, cmdType, cmdText, commandParameters));
                }
                // MessageBox.Show("网络异常,点击确定后系统自动重试。如果此异常长时间没有解除,请检查设备或者联系13164846310。\r\b" + ex.ToString().Substring(0, 200));
            }
            else
            {
                Mylog.Error(ex.ToString());
            }
            return(null);
        }
        finally
        {
            conn.Close();
        }
    }