谢谢你们啊　

Public Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
button1.Text = "显示"
TextB.Text = "你点击的是左边的按钮"
TextB.BackColor = Color.Orange
button2.Text = "点击我"
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
button1.Text = "点击我"
TextB.Text = "你点击的是右边的按钮"
TextB.BackColor = Color.Yellow
button2.Text = "显示"
End Sub

End Class
这是我经过你们的指点最后最出来的结果　我验证了是对的　谢谢你们的帮助啊