掛在datagridview。填充大量的數據

Question

你好，我想填充datagridview與數據文件中的項目。代碼停止在.fill上。我在Excel中測試了這個查詢（微軟查詢），它在那裏正常工作。我還測試了它（在我的vb代碼中）通過添加一個WHERE來只接收特定條目，這工作正常。任何想法如何讓我的應用程序工作？代碼如下，謝謝你的幫助！

Dim dataAdapter As New Odbc.OdbcDataAdapter() 

Private Sub ChangeSelect() 

    Dim selectCommand As String = "SELECT CWIPH.CUST_NO, CWIPH.JOB_NO, CWIPH.JOB_NAME, CJCMS.JOB_DESC FROM { OJ CWIPH CWIPH INNER JOIN CJCMS CJCMS ON CWIPH.JOB_NO = CJCMS.JOB_NO }" 

    accessDB(selectCommand) 
End Sub 

Private Sub accessDB(ByVal selectCommand As String) 
    Dim JobConnectionString As String = "Dsn=Jake; provider=System.Data.Odbc" 
    Dim cn As OdbcConnection = New OdbcConnection(JobConnectionString) 
    Dim table As New DataTable() 
    cn.Open() 

    Dim cmd As New Odbc.OdbcCommand(selectCommand, cn) 

    Me.dataAdapter = New Odbc.OdbcDataAdapter(cmd) 

    With dgvWorkOrder 

     .AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells 

     .AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.ColumnHeader 

     .AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.ColumnHeader 

    End With 

    Dim commandBuilder As New Odbc.OdbcCommandBuilder(Me.dataAdapter) 

    Me.dataAdapter.Fill(table) 
    Me.dgvWorkOrder.DataSource = table 

    cn.Close() 
End Sub 

Answer 1

這篇文章幫了很大忙。 What's better: DataSet or DataReader? 所以我最終更改了我的代碼以使用數據讀取器，並且非常好。