How to set the DefaultValue for a Color property in a control

[bbrik]

Hi,

I'm doing a control that has a custom color property and i want to set a
default value. I tried several combinations using the DefaultValue atribute
but it didn't work. It must be a constant, so i can't do:

[DefaultValue(Color.Red)]
public Color MyColor { ... }

I also tried:

[DefaultValue(typeof(Color), "255; 0; 0")]
public Color MyColor { ... }

and it didn't work.

Thanks in advance,

Bernardo

[Tim Wilson]

Use a "ShouldSerializeX" method.
http://msdn.microsoft.com/library/de...setmethods.asp

--
Tim Wilson
..Net Compact Framework MVP

"bbrik" <bb***@discussions.microsoft.com> wrote in message
news:E2**********************************@microsof t.com...

Hi,

I'm doing a control that has a custom color property and i want to set a
default value. I tried several combinations using the DefaultValue atribute but it didn't work. It must be a constant, so i can't do:

[DefaultValue(Color.Red)]
public Color MyColor { ... }

I also tried:

[DefaultValue(typeof(Color), "255; 0; 0")]
public Color MyColor { ... }

and it didn't work.

Thanks in advance,

Bernardo

[Nicholas Paldino [.NET/C# MVP]]

bbrik,

Have you tried:

[DefaultValue(typeof(Color), "Red")]
public Color MyColor

That should work. You need to use the string that is used in the
property grid for that value (Red is a defined color and the type converter
used for color acknowleges it).

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"bbrik" <bb***@discussions.microsoft.com> wrote in message
news:E2**********************************@microsof t.com...

Hi,

I'm doing a control that has a custom color property and i want to set a
default value. I tried several combinations using the DefaultValue
atribute
but it didn't work. It must be a constant, so i can't do:

[DefaultValue(Color.Red)]
public Color MyColor { ... }

I also tried:

[DefaultValue(typeof(Color), "255; 0; 0")]
public Color MyColor { ... }

and it didn't work.

Thanks in advance,

Bernardo

[bbrik]

Hi,

That worked, thanks! What is strange is that if you type "192;192;192" in
the property grid it gets converted to the color... so why the type converter
works at design time but not in the atribute?
Anyway, I get stuck with the predefined colors... It's ok because the name
Silver maps to the color i wanted, but it should accept custom colors.
What is also strange is that when I reset the color, it still gets Bold font
face on the property grid and I still can call reset again...

thanks again!

bbrik

"Nicholas Paldino [.NET/C# MVP]" wrote:

bbrik,

Have you tried:

[DefaultValue(typeof(Color), "Red")]
public Color MyColor

That should work. You need to use the string that is used in the
property grid for that value (Red is a defined color and the type converter
used for color acknowleges it).

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"bbrik" <bb***@discussions.microsoft.com> wrote in message
news:E2**********************************@microsof t.com...

Hi,

I'm doing a control that has a custom color property and i want to set a
default value. I tried several combinations using the DefaultValue
atribute
but it didn't work. It must be a constant, so i can't do:

[DefaultValue(Color.Red)]
public Color MyColor { ... }

I also tried:

[DefaultValue(typeof(Color), "255; 0; 0")]
public Color MyColor { ... }

and it didn't work.

Thanks in advance,

Bernardo

[bbrik]

Hi,

the designer totally ignored my ShouldSerializeMaskColor property

any ideas?

thanks!

"Tim Wilson" wrote:

Use a "ShouldSerializeX" method.
http://msdn.microsoft.com/library/de...setmethods.asp

--
Tim Wilson
..Net Compact Framework MVP

"bbrik" <bb***@discussions.microsoft.com> wrote in message
news:E2**********************************@microsof t.com...

Hi,

I'm doing a control that has a custom color property and i want to set a
default value. I tried several combinations using the DefaultValue

atribute

but it didn't work. It must be a constant, so i can't do:

[DefaultValue(Color.Red)]
public Color MyColor { ... }

I also tried:

[DefaultValue(typeof(Color), "255; 0; 0")]
public Color MyColor { ... }

and it didn't work.

Thanks in advance,

Bernardo

[Tim Wilson]

I assume that your property is named "MaskColor" and you have a method that
looks something like this...

public bool ShouldSerializeMaskColor()
{
return maskColorValue != (default color);
}

If the code is correct then ensure that you've rebuilt the assembly and are
not still referencing an old version.

--
Tim Wilson
..Net Compact Framework MVP

"bbrik" <bb***@discussions.microsoft.com> wrote in message
news:32**********************************@microsof t.com...

Hi,

the designer totally ignored my ShouldSerializeMaskColor property

any ideas?

thanks!

"Tim Wilson" wrote:

Use a "ShouldSerializeX" method.
http://msdn.microsoft.com/library/de...setmethods.asp
--
Tim Wilson
..Net Compact Framework MVP

"bbrik" <bb***@discussions.microsoft.com> wrote in message
news:E2**********************************@microsof t.com...

Hi,

I'm doing a control that has a custom color property and i want to set a default value. I tried several combinations using the DefaultValue

atribute

but it didn't work. It must be a constant, so i can't do:

[DefaultValue(Color.Red)]
public Color MyColor { ... }

I also tried:

[DefaultValue(typeof(Color), "255; 0; 0")]
public Color MyColor { ... }

and it didn't work.

Thanks in advance,

Bernardo