CHECKBOX Checkbox1: text=máy tính cá nhân Checkbox2: text=Máy photocopy Picturebox1 Picturebox2: Image – None; SizeMode: StretchImage Vào google tìm ảnh chèn vào picturebox thuộc tính: Image Để picturebox chồng lên đặt thuộc tính Visible=False CODE: Public Class Form1 Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Randomize() End Sub Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged PictureBox1.Visible = False If CheckBox1.CheckState = Then PictureBox1.Visible = True Else PictureBox1.Visible = False End If End Sub Private Sub CheckBox2_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox2.CheckedChanged PictureBox2.Visible = False If CheckBox2.CheckState = Then PictureBox2.Visible = True Else PictureBox2.Visible = False End If End Sub End Class Ta chọn checkbox trường hợp ...End Sub Private Sub CheckBox2 _CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox2 .CheckedChanged PictureBox2.Visible = False If CheckBox2 .CheckState... True Else PictureBox2.Visible = False End If End Sub End Class Ta chọn checkbox trường hợp