SqlConnection ，SqlTransaction，SqlCommand的常用法

Posted 2020-08-29 tomclock

using System;
using System.Data;
using System.Data.SqlClient;
using System.Text;

namespace ConsoleApplication1
{

    static class Test8
    {
        static SqlConnection cn;
        static SqlTransaction tr;
        
        public static void Test()
        {
            string dbConnection = "data source=192.168.131.38;initial catalog=SWSK_YOSAN_161115;persist security info=True;user id=sa;password=S3300859!;MultipleActiveResultSets=True;";
            cn = new SqlConnection(dbConnection);
            cn.Open();
            tr = cn.BeginTransaction();

            try
            {
                //To update data by ExecuteNonQuery()
                UpDataByExecuteNonQuery("EDI_ZENRECVNO", "E0760002", 44444, DateTime.Now);

                //GetZenrecNo("E0760002", "EDI_ZENRECVNO");
                GetByExecuteScalar("E0760002", "EDI_ZENRECVNO");

                //TEST
                DataTable dt = GetDataBySqlDataAdapter();



            }
            catch
            {
                tr.Rollback();
            }
            finally
            { 
                tr.Commit();
                if (cn != null)
                    cn.Close();
            }
        }

        private  static void UpDataByExecuteNonQuery(string tblName, string kinouID, int upRecvNo, DateTime upSysDate)
        {
            try
            {
                SqlCommand cmUpd = new SqlCommand();
                cmUpd.CommandTimeout = 60;
                cmUpd.Connection = cn;
                cmUpd.Transaction = tr;
                
                StringBuilder stb = new StringBuilder();
                Int32 rtn = 0;

                stb.AppendLine("   UPDATE " + tblName);
                stb.AppendLine("   SET EDIRECVNO = @UPRECVNO");
                stb.AppendLine("   ,TRKYMD  = @TRKYMD");
                stb.AppendLine("   ,TRKTIME = @TRKTIME");
                stb.AppendLine("    WHERE KINOKANRIID = @KINOID");
                cmUpd.CommandText = stb.ToString();

                cmUpd.Parameters.Add("@UPRECVNO", SqlDbType.BigInt);
                cmUpd.Parameters.Add("@KINOID", SqlDbType.VarChar);
                cmUpd.Parameters.Add("@TRKYMD", SqlDbType.DateTime);
                cmUpd.Parameters.Add("@TRKTIME", SqlDbType.DateTime);

                cmUpd.Parameters["@UPRECVNO"].Value = upRecvNo;
                cmUpd.Parameters["@KINOID"].Value = kinouID;
                cmUpd.Parameters["@TRKYMD"].Value = upSysDate.Date;
                cmUpd.Parameters["@TRKTIME"].Value = upSysDate;

                rtn = cmUpd.ExecuteNonQuery();
                
                cmUpd.CommandText = stb.ToString();
                
                rtn = cmUpd.ExecuteNonQuery();
                Console.WriteLine(rtn.ToString());
                Console.ReadLine();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        
        private static Int32 GetByExecuteNonQuery(string kinouID, string tblName)
        {
            try
            {
                DataTable ret = new DataTable();
                SqlCommand cm = new SqlCommand();
                cm.CommandTimeout = 60;
                cm.Connection = cn;
                SqlDataAdapter adp = new SqlDataAdapter();
                DataSet ds = new DataSet();
                StringBuilder stb = new StringBuilder();

                Int32 rtn = 0;

                stb.AppendLine("   SELECT EDIRECVNO");
                stb.AppendLine("     FROM " + tblName);
                stb.AppendLine("    WHERE KINOKANRIID = ‘" + kinouID + "‘");
                stb.AppendLine(" ORDER BY TRKYMD, TRKTIME");

                cm.CommandText = stb.ToString();
                cm.Transaction = tr;
                adp.SelectCommand = cm;
                adp.Fill(ds, "GetRecvT");
                ret = ds.Tables["GetRecvT"];

                if (ret.Rows.Count > 0)
                {
                    rtn = int.Parse(ret.Rows[0][0].ToString());
                }

                Console.WriteLine(rtn.ToString());

                Console.ReadLine();

                return rtn;
            }
            catch
            {
                throw;
            }
        }

        private static string GetByExecuteScalar(string kinouID, string tblName)
        {
            try
            {
                SqlCommand cm = new SqlCommand
                {
                    CommandTimeout = 60,
                    Connection = cn,
                    Transaction = tr
                };

                StringBuilder stb = new StringBuilder();
                stb.AppendLine("   SELECT EDIRECVNO");
                stb.AppendLine("     FROM " + tblName);
                stb.AppendLine("    WHERE KINOKANRIID = ‘" + kinouID + "‘");
                stb.AppendLine(" ORDER BY TRKYMD, TRKTIME");

                cm.CommandText = stb.ToString();

                var rtn = cm.ExecuteScalar();
                
                Console.WriteLine(rtn.ToString());

                Console.ReadLine();

                return rtn.ToString();
            }
            catch
            {
                throw;
            }
        }

        private static DataTable GetDataBySqlDataAdapter()
        {
            var ds = new DataSet();

            var cm = new SqlCommand
            {
                CommandTimeout = 60,
                Connection = cn,
                Transaction = tr
            };

            //ＳＱＬ発行時のタイムアウトを設定
            using (var adp = new SqlDataAdapter())
            {
                var stb = new StringBuilder();

                //空白のデータベースを取得する
                stb.AppendLine("    SELECT  *");
                stb.AppendLine("    FROM  " + "TABLENAME");
                stb.AppendLine("    ORDER BY ENTRYTIME, SEQ, MAT_DOC");

                cm.CommandText = stb.ToString();
                adp.SelectCommand = cm;
                adp.Fill(ds);
            }

            return ds.Tables[0];
        }
    }   

}