vb.net保存的datagridview到文本文件分隔符

Question

我怎麼能保存單元格的值到文本文件分隔符 我有9行 和我有這樣的代碼

Dim newoutputlines As New List(Of String) 
Dim finlines As New List(Of String) 
Dim aas As String = "" 
For x As Integer = 0 To DataGridView1.Rows.Count - 1 
    For v As Integer = 0 To 9 
    'extracting cell value from 0 to 9 and add it on list 
    newoutputlines.Add(DataGridView1.Rows(x).Cells(v).Value) 
    Next 
    'adding delimiter to list 
    aas = String.Join("|", newoutputlines.ToArray()) 
    finlines.add(ass) 
Next 
IO.File.WriteAllLines(FILE_NAME, finlines.ToArray) 

然後在我的文本文件，我想保存這樣的格式

0|1|2|3|4|5|6|7|8|9 'this is from index 0 of gridview 
0|3|0|8|6|5|6|7|8|0 'this is from index 1 of gridview 
6|1|2|5|4|5|6|7|5|59 'this is from index 2 of gridview 

，但即時通訊失敗 ，結果我已經在我的文本文件得到的是這樣的

0|1|2|3|4|5|6|7|8|9 
0|1|2|3|4|5|6|7|8|9|0|3|0|8|6|5|6|7|8|0 
0|1|2|3|4|5|6|7|8|9|0|3|0|8|6|5|6|7|8|0|6|1|2|5|4|5|6|7|5|59 

Answer 1

您的newoutputlines仍然具有以前的值。每次添加新行時，都需要清除它
但是，我想通過使用StringBuilder來顯示我的方法以將值保存在文件中。如果你有很多行，那麼這種方法會更有效率。

Dim text As New StringBuilder() 
For x As Integer = 0 To DataGridView1.Rows.Count - 1 
    For v As Integer = 0 To 9 
     'extracting cell value from 0 to 9 and add it on list 
     if v > 0 Then text.Append("|") 
     text.Append(DataGridView1.Rows(x).Cells(v).Value.ToString()) 
    Next 
    'adding new line to text 
    text.AppendLine() 
Next 
IO.File.WriteAllText(FILE_NAME, text.ToString())