COMBOBOX Thiết kế form sau: Khi click vào combobox chọn “đội tuyển PHÁP” label trên, chọn “đội tuyển MỸ” label chữ khác hình khác CODE Public Class Form1 Private Sub PictureBox2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox2.Click, PictureBox4.Click End Sub Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged If ComboBox1.SelectedIndex = Then Label1.Text = "AAA" If ComboBox1.SelectedIndex = Then Label2.Text = "BBB" If ComboBox1.SelectedIndex = Then PictureBox1.Visible = True If ComboBox1.SelectedIndex = Then PictureBox2.Visible = True If ComboBox1.SelectedIndex = Then PictureBox3.Visible = False If ComboBox1.SelectedIndex = Then PictureBox4.Visible = False If If If If ComboBox1.SelectedIndex ComboBox1.SelectedIndex ComboBox1.SelectedIndex ComboBox1.SelectedIndex = = = = 1 1 Then Then Then Then Label1.Text = "CCC" Label2.Text = "DDD" PictureBox3.Visible = True PictureBox4.Visible = True If ComboBox1.SelectedIndex = Then PictureBox1.Visible = False If ComboBox1.SelectedIndex = Then PictureBox2.Visible = False End Sub End Class ...If ComboBox1. SelectedIndex = Then PictureBox3.Visible = False If ComboBox1. SelectedIndex = Then PictureBox4.Visible = False If If If If ComboBox1. SelectedIndex ComboBox1. SelectedIndex ComboBox1. SelectedIndex... ComboBox1. SelectedIndex ComboBox1. SelectedIndex = = = = 1 1 Then Then Then Then Label1.Text = "CCC" Label2.Text = "DDD" PictureBox3.Visible = True PictureBox4.Visible = True If ComboBox1. SelectedIndex... True PictureBox4.Visible = True If ComboBox1. SelectedIndex = Then PictureBox1.Visible = False If ComboBox1. SelectedIndex = Then PictureBox2.Visible = False End Sub End Class