如何檢索存儲在數據表中的行和列，並使用visual studio 2010在文本框中顯示

Question

在這裏，我可以從文本文件中檢索行和列，並將其存儲在名爲「tb1」的表中。代碼成功運行。現在我想添加一個新的過程，它將從tb1中檢索數據，並分別顯示textfield1和2和3中的每一行，並添加下一個按鈕將顯示下一行等等。

Public Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click 
     Dim tbl As New DataTable("mytable") 
     tbl.Columns.Add("col1", GetType(String)) 
     tbl.Columns.Add("col2", GetType(String)) 
     tbl.Columns.Add("col3", GetType(Integer)) 
     Dim sFilename As String = "C:\test.txt" 
     Dim myStream As System.IO.StreamReader = New System.IO.StreamReader(sFilename) 
     Dim line As String 
     Dim aRow As DataRow 
     Do 
      line = myStream.ReadLine() 
      If line Is Nothing Then 
       Exit Do 
      End If 

      Dim sAry As String() = Split(line, ",") ' separate the fields of the current row   
      aRow = tbl.NewRow 'get a DataRow that has the required structure 
      aRow(0) = sAry(0) 
      aRow(1) = sAry(1) 
      aRow(2) = sAry(2) 
      'aRow(2) = CInt(sAry(2)) 
      'MsgBox(aRow(1).ToString) 

      tbl.Rows.Add(aRow) 
     Loop 
     myStream.Close() 
     For Each aRow In tbl.Rows 
      Console.WriteLine("{0} {1} {2}", aRow(0), aRow(1), aRow(2)) 
     Next 

    End Sub 


    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click 
     Can I access tb1 here? 
Also want to try to store this table in sqldatabase... 

    End Sub 

Answer 1

嘗試類似於：

yourTextBox.Text = dt.Rows(0)("ColumnName").ToString() 

我希望它能幫助。