vb.net：Odbc.OdbcDataReaderとしてレコードセットを使用する列名

Question

私は、Postgres DBからデータを取得するWebサービスを作成しています。ここで

は私のコード：

Dim sql As String 
    Dim recordSet As Odbc.OdbcDataReader 
    Dim command As Odbc.OdbcCommand 
    Dim ret As New DataOutput 
    Dim dataLst As New List(Of Data) 
    Dim element As Dati 

sql = "SELECT * from demo.table" 
     command = New Odbc.OdbcCommand(sql, odbcConn) 

     Try 
      recordSet = command.ExecuteReader 
      While recordSet.Read() 
       element = New Data 
       element.id = recordSet(0) 
       element.name = recordSet(1) 
       element.description = recordSet(2) 
       element.address = recordSet(3) 
       dataLst.Add(element) 
      End While 
     ret.arrDati = dataLst 

これは私だけの行の値を示すが、私はあまりにも列名が必要です。 どうすればいいですか？

Answer 1

あなたはGetName方法でカラム名にアクセスすることができます。

Dim sql As String 
Dim recordSet As Odbc.OdbcDataReader 
Dim command As Odbc.OdbcCommand 
Dim ret As New DataOutput 
Dim dataLst As New List(Of Data) 
Dim element As Dati 

sql = "SELECT * from demo.table" 
command = New Odbc.OdbcCommand(sql, odbcConn) 

Try 
    recordSet = command.ExecuteReader 

    While recordSet.Read() 
     element = New Data 
     element.id = recordSet(0)   'column name: recordSet.GetName(0) 
     element.name = recordSet(1)   'column name: recordSet.GetName(1) 
     element.description = recordSet(2) 'column name: recordSet.GetName(2) 
     element.address = recordSet(3)  'column name: recordSet.GetName(3) 
     dataLst.Add(element) 
    End While 

    ret.arrDati = dataLst