ONCE BU FONKSIYONU EKLE;
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Sub pastefromclipboardtodatagridview(ByVal dgv As DataGridView)
        Dim rowSplitter As Char() = {vbCr, vbLf}
        Dim columnSplitter As Char() = {vbTab}

        ‘get the text from clipboard

        Dim dataInClipboard As IDataObject = Clipboard.GetDataObject()
        Dim stringInClipboard As String = CStr(dataInClipboard.GetData(DataFormats.Text))

        ‘split it into lines
        Dim rowsInClipboard As String() = stringInClipboard.Split(rowSplitter, StringSplitOptions.RemoveEmptyEntries)

        ‘get the row and column of selected cell in grid
        Dim r As Integer = dgv.SelectedCells(0).RowIndex
        Dim c As Integer = dgv.SelectedCells(0).ColumnIndex

        ‘add rows into grid to fit clipboard lines
        If (dgv.Rows.Count < (r + rowsInClipboard.Length)) Then
            dgv.Rows.Add(r + rowsInClipboard.Length – dgv.Rows.Count)
        End If

        ‘ loop through the lines, split them into cells and place the values in the corresponding cell.
        Dim iRow As Integer = 0
        While iRow < rowsInClipboard.Length
            ‘split row into cell values
            Dim valuesInRow As String() = rowsInClipboard(iRow).Split(columnSplitter)
            ‘cycle through cell values
            Dim iCol As Integer = 0
            While iCol < valuesInRow.Length
                ‘assign cell value, only if it within columns of the grid
                If (dgv.ColumnCount – 1 >= c + iCol) Then
                    dgv.Rows(r + iRow).Cells(c + iCol).Value = valuesInRow(iCol)
                End If
                iCol += 1
            End While
            iRow += 1
        End While

    End Sub

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1 ADET DATAGRIDVIEW YARAT
1 ADET BUTTON YARAT
CİFT TIKLA BUTTONA
KOD:
        DataGridView1.AllowUserToAddRows = False
        DataGridView1.Rows.Add()
        pastefromclipboardtodatagridview(DataGridView1)
        DataGridView1.AllowUserToAddRows = False
        DataGridView1.Rows.Add()
        pastefromclipboardtodatagridview(DataGridView1)