Exercise 2

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.AutoSize = True : Me.Text = "Graph by 40602154"
        PictureBox1.Top = 0 : PictureBox1.Left = 0
        PictureBox1.Width = 500 : PictureBox1.Height = 500
        Button1.Text = "Draw" : Button1.Font = New Font("Courier", 20)
        Button1.Width = 115 : Button1.Height = 50
        Button1.Top = 10 : Button1.Left = PictureBox1.Width + 50
    End Sub
    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim myGraph As Graphics = PictureBox1.CreateGraphics
        Dim myPen1, myPen2 As Pen
        Dim mybrush As Brush
        Dim id, x1, y1, width, height As Integer
        myPen1 = New Pen(Color.Blue, 5)
        myPen2 = New Pen(Color.DarkMagenta, 3)
        mybrush = New SolidBrush(Color.DarkMagenta)
        myGraph.DrawRectangle(myPen1, 0, 0, 500, 500)
        For id = 1 To 9
            x1 = 450 - ((id - 1) * 50)
            y1 = id * 50
            width = x1 + id * 50
            height = 50
            myGraph.DrawRectangle(myPen2, x1, y1, width, height)
            myGraph.FillRectangle(mybrush, x1, y1, width, height)
        Next

    End Sub
End Class