How to declare an optional color parameter in a vb.net procedure

Question

How do you declare an optional color parameter in a vb.net procedure?

I tried the following, however; I got an error message saying that the color needs to be a constant. It seems like the color data type is a structure.
Private Sub DisplayStatisticResult(ByVal ResultLine As String, ByVal LabelText As String, ByVal ResultText As String, Optional ByVal HText1 As String = "**", Optional ByVal HColor1 As Color = Color.Black)

    End Sub

Answer 1

Hi @
You can try the following code.

    Private Sub Test(a As Integer, Optional c As Color = Nothing)  
        If c = Nothing Then  
            c = Color.Black ' your default color'  
        End If  
    End Sub  

Best Regards.
Jiachen Li

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