Hello I have another VB question about the graphic, I have tried to code, but it does not work, please help me to find the solution. (the final graphic should be like the photo after my coding) Thanks a lot!

Fin Form 1 U Projet1 - Form1 (Code) (Gnral) For i = 0 To xmax Step 10 'to draw Parallel Picturel.Line (i, 0)-(i, ymax) Picturel. Line (0, i) - (xmax, x) Next i Parallel diagonal End Sub Private Sub Command2_Click() For i = -xmax To xmax Step 10 'to draw diagonal Picturel. Line (i, 0)-(xmax, ymax) Picturel. Line (i, ymax) - (xmax, 0) Next i End Sub