Random r = new Random();
int i, j;
DialogResult dlg;
for (i = 0; i <= 3; i++)
{
    for (j = 0; j <= 3; j++)
    {
        fpSpread1.ActiveSheet.SetValue(i, j, r.Next() -100000);
    }
}
dlg = MessageBox.Show("Do you want to cut the data to the clipboard?", "ClipboardCut", MessageBoxButtons.YesNo);
if (dlg == DialogResult.Yes)
{
    fpSpread1.ActiveSheet.AddSelection(0, 0, 3, 3);
    fpSpread1.ActiveSheet.ClipboardCut();
}

Dim r As New Random()
Dim i, j As Integer
Dim dlg As DialogResult
For i = 0 To 3
    For j = 0 To 3
        FpSpread1.ActiveSheet.SetValue(i, j, r.Next - 100000.ToString())
    Next j
Next i
dlg = MessageBox.Show("Do you want to cut the data to the clipboard?", "ClipboardCut", MessageBoxButtons.YesNo)
If dlg = DialogResult.Yes Then
    FpSpread1.ActiveSheet.AddSelection(0, 0, 3, 3)
    FpSpread1.ActiveSheet.ClipboardCut()
End If