Gridview不会从数据表中填充

Question

我不确定是不是因为数据表没有正确填写（因此是空的，没有任何内容可显示），或者我是不是将它加载到gridview上正确，但这是我的代码：

    Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
    'So Get all the Rows by splitting it on a NewLine Character
    Dim Rows() As String = Clipboard.GetText().Split(Environment.NewLine)

    Dim Cols() As String


    Dim DT As New DataTable


    Dim DR As DataRow
    For i As Int32 = 0 To Rows.Length - 1
        'Then For Each Row get the Columns which are tab Seperated
        Cols = Rows(i).Split(vbTab)
        DR = DT.NewRow
        'Now create a DataRow to be added to the underlying DataTable
        For j As Int32 = 0 To Cols.Length - 1
            'Now loop for each Column and Add the column data
            If DT.Columns.Count > j Then
                If (j = 2) Then

                    DR(j) = Convert.ToInt32(Cols(j))
                Else
                    DR(j) = Cols(j)
                End If
            End If
        Next
        DT.Rows.Add(DR)
    Next




    DataGridView2.DataSource = DT



End Sub

编辑：当我在运行程序之前预先将列添加到gridview时，它将在其中填充空白数据。当我预先添加gridview中没有列时，没有任何反应。

如何使数据表动态添加列数？