Jeff-
This should work:
<Code snippet = VB.NET>
Private m_AlternateBackColor As Color = SystemColors.Control
<Category("Appearance"), _
Description("Gets or Sets the alternate back color."), _
DefaultValue(GetType(Color), "Control")> _
Public Property AlternateBackColor As Color
Get
Return m_AlternateBackColor
End Get
Set(ByVal Value As Color)
m_AlternateBackColor = Value
End Set
End Property
</Code Snippet>
Jacob A. Grass
> -----Original Message-----
> From: Jeff [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, May 16, 2002 7:42 AM
> To: [EMAIL PROTECTED]
> Subject: [DOTNET] DefaultValue() Attribute Question
>
>
> I searched the list and the net and found a few vague references to my
> question, but no concrete answers.
>
> I have a control where I want to specify default values so
> the property
> grid does not incorrectly bold the default settings (visual
> cue that they
> have been changed from the default when this is in fact not true).
>
> Say I have something along the lines of:
>
> [Category("Appearance"),
> Description("Gets or sets alternate background color."),
> Browsable(true),
> DefaultValue(SystemColors.Control)]
>
> public Color AlternateBackColor
> {
> get {return alternateBackColor;}
>
> set {alternateBackColor = value;}
> }
>
> The error I get, of course, is:
> "An attribute argument must be a constant expression, typeof
> expression or
> array creation expression"
>
> So, how to make this a constant expression?
>
> I have tried other things like DefaultValue(-2830136) (the
> RGB value I get
> returned for SystemColors.Control), but neither this, nor any
> of the other
> things I have tried has worked.
>
> Does anyone know how to specify real default settings
> attributes for Color
> and Font properties like this? Bool, int, string, etc are so
> easy, but
> it's just not intuitive for any of these complex object
> types. I won't be
> surprised if someone shows me it's really easy for Color, but
> Font looks
> like it would be a bit more complex to represent in this
> attribute in some
> way.
>
> I would say the bold in the property grid is simply a
> cosmetic thing, but
> it gives a completely false user cue and is unprofessional.
>
> Any insight into this would be appreciated.
>
> Thanks,
>
> Jeff
>
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