使表单的背景变得透明

Question

我制作了一个无边框表格,然后将背景图像(PNG格式)设置为如下图所示.我想要的是使表单的背景透明,以便只显示圆形图像.我尝试将表单更改BackColor为Transparent但是我收到错误说Property value is not vald

Answer 1

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

         Me.TransparencyKey = Color.LightBlue
         Me.BackColor = Color.LightBlue

    End Sub