使用案例更改背景顏色| Visual Studio 2008

Question

我真的需要處理案例的幫助，目前爲止我只是在學習它，但卻無法獲得可以改變文本框背景的下拉菜單。

Private Sub cbColours_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cbColours.SelectedIndexChanged 
    Select Case colours 

     Case Is = "Red" 
      txtSpace.BackColor = Color.Red 

     Case Is = "Blue" 
      txtSpace.BackColor = Color.Blue 

     Case Is = "Green" 
      txtSpace.BackColor = Color.Green 

    End Select 
End Sub 

它沒有做任何事情...

在下拉菜單中，它具有

紅，藍，每行

綠色的

當值（例如綠色），然後將文本框更改爲所選顏色。

很多幫助表示讚賞:)

Answer 1

不知道你在哪裏得到的顏色值，這裏的簡單：

Private Sub cbColours_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cbColours.SelectedIndexChanged 
    Select Case Sender.Text  
     Case Is = "Red" 
      txtSpace.BackColor = Color.Red 

     Case Is = "Blue" 
      txtSpace.BackColor = Color.Blue 

     Case Is = "Green" 
      txtSpace.BackColor = Color.Green 

    End Select 
End Sub