Label.BackColor transparent

[Andrzejek]

VB.NET 2010
I create a label in the code and place it on the panel (pnlTop) on the Windows Form:

Dim lbl As New Label

With lbl
    .Name = "lblNewLabel" 
    .Text = "Some text here"

    Me.pnlTop.Controls.Add(lbl)

    .Left = 20
    .Top = 50
    .AutoSize = True[red]
    .BackColor = Color.Transparent   [/red]
    .BringToFront()
End With

Sometimes the newly created label is placed over another control on the panel and I would like the label to have transparent back color (red line of code) and not the default gray background. But the red line of code is ignored and I still see the gray background of the label.

Is there any way to change the back color of the label to transparent in the code?


Have fun.

---- Andy

 

[DaveInIowa]

Does the version of Windows you're running on support transparency? I tried your sample and it works okay on my system?

 

[Andrzejek]

Thank you Dave for trying...

I have Windows 7

When I place the label at design time, it looks like its BackColor is transparent by default. Interesting...

So what I tried at design time was:
Placed a big Label2 on the Form, AutoSize to False, send it to back
Placed a small Label1 on top of Label2, bring it to front

3 buttons:

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
        Handles Button1.Click
        Me.Label2.BackColor = Color.Red
        Me.Label1.Text = "This is color red"[red]
        Me.Label1.BackColor = Color.Transparent[/red]
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
        Handles Button2.Click
        Me.Label2.BackColor = Color.Blue
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
        Handles Button3.Click
        Me.Label2.BackColor = Color.Green
    End Sub

Red line of code - ignored :-(


Have fun.

---- Andy

 

[DaveInIowa]

It appears that Color.Transparent isn't really transparent but rather the color of the control's container. That's why I had originally though it was working correctly on my system as I had placed it in a Panel. I'm getting the same results as you with your example.