데이터베이스 데이터 읽기 및 변수로 전달

Question

누구든지 실수를 저에게 지적 할 수 있습니다. 데이터베이스에서 데이터를 읽고 내 함수에 넣을 새 SQL 쿼리를 넣고 싶습니다. 그리고 결국에는 현재 출구 I에서,

using (SqlConnection db = new SqlConnection(ConfigurationManager.ConnectionStrings["TestControl.Properties.Settings.DB"].ConnectionString)) 
     { 
      boAPI4.Login login = new boAPI4.Login(); 
      string cS = login.GetConnectionString(); 
      DataAccess dA = new DataAccess(cS); 
      int userID = dA.getLpeID(login.GetBoUserNr()); 
      PRAESENZZEIT q = new PRAESENZZEIT(); 

      q.ZPZ_LPE_ID = userID; 
      if (db.State == ConnectionState.Closed) 
       db.Open(); 
      string query = "SELECT per.LPE_Nr, zei.ZPZ_LPE_ID, zei.ZPZ_Datum, SUM (zei.ZPZ_Std100) AS ZPZ_Std100" + 
          " FROM DB.dbo.Z_PRAESENZZEIT zei INNER JOIN DB.dbo.A_PERSONAL per ON zei.ZPZ_LPE_ID = per.LPE_ID" + 
          $" WHERE zei.ZPZ_Datum BETWEEN '{dtFromDate.Value}' AND '{dtToDate.Value}' AND zei.ZPZ_LPE_ID='{userID.ToString()}' GROUP BY per.LPE_Nr, zei.ZPZ_LPE_ID, zei.ZPZ_Datum ORDER BY zei.ZPZ_Datum, per.LPE_Nr;"; 

      pRAESENZZEITBindingSource.DataSource = db.Query<PRAESENZZEIT>(query, commandType: CommandType.Text); 

      List<PRAESENZZEIT> listid = new List<PRAESENZZEIT>(); 
      PRAESENZZEIT pra = new PRAESENZZEIT(); 
      SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["TestControl.Properties.Settings.DB"].ConnectionString); 
      string sql = "SELECT ZPZ_Von,ZPZ_bis FROM DB.dbo.Z_PRAESENZZEIT WHERE ZPZ_LPE_ID='196'"; 
      con.Open(); 
      SqlCommand cmd = new SqlCommand(sql, con); 
      SqlDataReader dr = cmd.ExecuteReader(); 

      while (dr.Read()) 
      { 
       pra.ZPZ_Von = Convert.ToDateTime(dr["ZPZ_Von"]); 
       pra.ZPZ_Bis = Convert.ToDateTime(dr["ZPZ_bis"]); 
       listid.Add(pra); 
      } 
      dataGridView1.DataSource = listid; 
      con.Close(); 

      DateTime kommen = DateTime.Now; 

      kommen = pra.ZPZ_Von; 
      if (pra.ZPZ_Von.TimeOfDay < new TimeSpan(8, 5, 0)) 
       pra.ZPZ_Von = new DateTime(pra.ZPZ_Von.Year, pra.ZPZ_Von.Month, pra.ZPZ_Von.Day, 8, 0, 0); 

      DateTime gehen = DateTime.Now; 
      gehen = pra.ZPZ_Bis; 
      TimeSpan arbeitszeit = pra.ZPZ_Bis - pra.ZPZ_Von; 

     } 

현재 첫 번째 쿼리이 버튼 내 전체 코드처럼 보이는 SUM (zei.ZPZ_Std100) AS ZPZ_Std100

에 나타나는 콜론 ("stunden")의 출구에 표시됩니다

그래서, 내가

이이 변수를 통해가는 방법이지만이 기본 데이터를 처리하지 않은 것처럼 결과를 반환 변수 날짜를 통과 데이터가 필요, 문제는 무엇인가? 이해하면 시간 [ZPZ_VON 7시 45분] 출구는 ... 8시해야한다는

SQL 쿼리SELECT ZPZ_Von, DB.dbo.Z_PRAESENZZEIT FROM ZPZ_bis ZPZ_LPE_ID = '196'

CODE :

List<PRAESENZZEIT> listid = new List<PRAESENZZEIT>(); 
      SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["TestControl.Properties.Settings.DB"].ConnectionString); 
      string sql = "SELECT ZPZ_Von, ZPZ_bis FROM DB.dbo.Z_PRAESENZZEIT WHERE ZPZ_LPE_ID='196'"; 
      con.Open(); 
      SqlCommand cmd = new SqlCommand(sql, con); 
      SqlDataAdapter da = new SqlDataAdapter(cmd); 
      SqlDataReader dr = cmd.ExecuteReader(); 

      DataTable dt = new DataTable(); 


      while (dr.Read()) 
      { 
       PRAESENZZEIT pra = new PRAESENZZEIT(); 
       pra.ZPZ_Von = Convert.ToDateTime(dr["ZPZ_Von"]); 
       pra.ZPZ_Bis = Convert.ToDateTime(dr["ZPZ_bis"]); 
       listid.Add(pra); 

       DateTime kommen = DateTime.Now; 

       kommen = pra.ZPZ_Von; 
       if (pra.ZPZ_Von.TimeOfDay < new TimeSpan(8, 5, 0)) 
        pra.ZPZ_Von = new DateTime(pra.ZPZ_Von.Year, pra.ZPZ_Von.Month, pra.ZPZ_Von.Day, 8, 0, 0); 

       DateTime gehen = DateTime.Now; 
       gehen = pra.ZPZ_Bis; 
       TimeSpan arbeitszeit = pra.ZPZ_Bis - pra.ZPZ_Von; 
      } 
      con.Close(); 

데이터베이스 쿼리 결과 :

Answer 1

pra 클래스를 while 루프 외부에서 초기화하려고했습니다. 매번 listid 목록에 새 레코드를 추가하지 않는 경우 DataRow을 DataReader에서 읽습니다.

이 아래 코드를 사용해보십시오 :

using (SqlConnection db = new SqlConnection(ConfigurationManager.ConnectionStrings["TestControl.Properties.Settings.DB"].ConnectionString)) 
{ 
    boAPI4.Login login = new boAPI4.Login(); 
    string cS = login.GetConnectionString(); 
    DataAccess dA = new DataAccess(cS); 
    int userID = dA.getLpeID(login.GetBoUserNr()); 
    PRAESENZZEIT q = new PRAESENZZEIT(); 

    q.ZPZ_LPE_ID = userID; 
    if (db.State == ConnectionState.Closed) 
     db.Open(); 
    string query = "SELECT per.LPE_Nr, zei.ZPZ_LPE_ID, zei.ZPZ_Datum, SUM (zei.ZPZ_Std100) AS ZPZ_Std100" + 
        " FROM DB.dbo.Z_PRAESENZZEIT zei INNER JOIN DB.dbo.A_PERSONAL per ON zei.ZPZ_LPE_ID = per.LPE_ID" + 
        $" WHERE zei.ZPZ_Datum BETWEEN '{dtFromDate.Value}' AND '{dtToDate.Value}' AND zei.ZPZ_LPE_ID='{userID.ToString()}' GROUP BY per.LPE_Nr, zei.ZPZ_LPE_ID, zei.ZPZ_Datum ORDER BY zei.ZPZ_Datum, per.LPE_Nr;"; 

    pRAESENZZEITBindingSource.DataSource = db.Query<PRAESENZZEIT>(query, commandType: CommandType.Text); 

    List<PRAESENZZEIT> listid = new List<PRAESENZZEIT>(); 
    //PRAESENZZEIT pra = new PRAESENZZEIT(); //Needs to be inside the while loop. 
    SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["TestControl.Properties.Settings.DB"].ConnectionString); 
    string sql = "SELECT ZPZ_Von,ZPZ_bis FROM DB.dbo.Z_PRAESENZZEIT WHERE ZPZ_LPE_ID='196'"; 
    con.Open(); 
    SqlCommand cmd = new SqlCommand(sql, con); 
    SqlDataAdapter da = new SqlDataAdapter(cmd); 
    DataTable dt = new DataTable(); 
    da.Fill(dt); 

    var listid = ConvertDataTable<PRAESENZZEIT>(dt); 

    dataGridView1.DataSource = listid; 
    con.Close(); 
} 

private static List<T> ConvertDataTable<T>(DataTable dt) 
{ 
    List<T> data = newList<T>(); 
    foreach (DataRowrow in dt.Rows) 
    { 
     Titem = GetItem<T>(row); 
     data.Add(item); 
    } 
    return data; 
} 

private static TGetItem<T>(DataRow dr) 
{ 
    Type temp = typeof(T); 
    T obj =Activator.CreateInstance<T>(); 
    foreach (DataColumncolumn in dr.Table.Columns) 
    { 
     foreach (PropertyInfopro in temp.GetProperties()) 
     { 
     if (pro.Name == column.ColumnName) 
     pro.SetValue(obj,dr[column.ColumnName], null); 
     else 
     continue; 
     } 
    } 
    return obj; 
}