Error message

Question

This is the error message given when i try and draw a rectangle An unhandled exception of type 'System.ArgumentException' occurred in system.drawing.dll Additional information: Invalid parameter used. I get an error from this code: Private Sub picBoard_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles picImage.MouseMove If isDragging Then Dim gr As Graphics = picImage.CreateGraphics gr.Clear(picImage.BackColor) Dim rect As New Rectangle(startX, startY, e.X - startX, e.Y - startY) gr.DrawRectangle(Pens.Red, rect) gr.FillRectangle(Brushes.Transparent, rect) Dim bmpCropped As New Bitmap(e.X - startX, e.Y - startY) Dim grBitmap As Graphics = Graphics.FromImage(bmpCropped) grBitmap.DrawImage(picImage.Image, 0, 0, rect, _ GraphicsUnit.Pixel) picImage.Image = bmpCropped picImage.SizeMode = PictureBoxSizeMode.Normal gr.Dispose() End If End Sub This is supposed to crop the image from the rectangle drawn. the error is from this line of code because it accepts invalid inputs i think. Dim bmpCropped As New Bitmap(e.X - startX, e.Y - startY)