can I define custom colors?

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jrl - 07 Mar 2008 03:22 GMT

Is there any way to define a custom color, in the code files of a web site
project?

I'd like to be able to define a pallette, using my own names, and then be
able to use those names in aspx files.
I know I can define styles, and use CSS on controls. But it seems like I
should be able to define a color name, and have it interpreted into the rgb
during rendering.

For example, it would be something like:

color sage=(A0, B0, C0); // defining the color name

<body bgcolor=sage> //in the aspx

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Steven Cheng - 07 Mar 2008 05:47 GMT

Hi Jrl,

As for defining some custom colors for using in aspx page, I think it is
still better to use css for client-side html elements since there is no
particular html standard approachs that can help define custom colors only.

For controls that can utilize asp.net server-side expression, you can
consider put your custom colors into a global resource file(resx) and use
resource expression to embed color into control property. e.g.

==============
<asp:Button ID="btnSet" runat="server" ... BackColor='<%$
Resources:colors, color1 %>' />
==============

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

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--------------------

>X-Trace-PostClient-IP: 70.67.40.71
>From: "jrl" <jrl@newsgroup.nospam>
[quoted text clipped - 15 lines]
>
><body bgcolor=sage> //in the aspx

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jrl - 09 Mar 2008 07:03 GMT

Thanks Steven,

I learned how to set up a global resource, and set color names and values
there. Then I was able to use these in a control as you described (except
that it used double quotes as opposed to single quotes: BackColor="<%$
Resources:colors, color1 %>" )

And actually, I would like to use these named colors in the definition of
CSS elements, but how can I specify an expression bound value in the CSS
file? Since I'm wanting to define site-wide colors, to be used in the style
sheet.

I tried using a style sheet definition like background-color: "<%$
Resources:Resource, color1 %>";
which would be similar to how it is used on a control, but this isn't
accepted.

Is there a special format to bind a stylesheet color to a resource?

thanks,

> Hi Jrl,
>
[quoted text clipped - 80 lines]
>>
>><body bgcolor=sage> //in the aspx

Reply to this Message

Steven Cheng - 10 Mar 2008 05:28 GMT

Hi Jrl,

Thanks for your reply.

Do you mean use the <% ... %> expression in static css style file? I'm
afraid this is not supported since <%XX %> expression is working in ASPX
page only.

If you want to let the css stylesheet contains some values that are
dynamically loaded(from resource or other location). I think you may
consider using a custom httphandler to output the css stylesheet and do
some string replacement in the httphandler for the css stylesheet.

For example, you can define the following kind of static css template:

=======
.myclass
{
background-color: [#colorID];
...
}
=======

your httphandler need to parse the requested css style template and replace
those #colorID with actual values(loaded from resource file or other place).

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we

can improve the support we provide to you. Please feel free to let my
manager know what you think of

the level of service provided. You can send feedback directly to my manager
at: msdnmg@microsoft.com.

--------------------

>From: "jrl" <jrl@newsgroup.nospam>
>Newsgroups: microsoft.public.vsnet.general
>Subject: Re: can I define custom colors?

>Thanks Steven,
>
[quoted text clipped - 51 lines]
>> ==================================================
>> Get notification to my posts through email? Please refer to

http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif

>> ications.
>>
[quoted text clipped - 44 lines]
>>>
>>><body bgcolor=sage> //in the aspx

Reply to this Message

jrl - 10 Mar 2008 07:28 GMT

Yes, this is exactly what I'm seeking. As this is a new area for me, I will
probably need to find some example I can learn from (to make a custom
httphandler).
If you happen to know an example you can link to, that would be appreciated.
However, I realize this is a lot to ask, and if it is not easily available,
I will search for it in other ways.

thanks,

> Hi Jrl,
>
[quoted text clipped - 158 lines]
>>>>
>>>><body bgcolor=sage> //in the aspx

Reply to this Message

Steven Cheng - 10 Mar 2008 09:06 GMT

Yes, I know some examples since this is also a common question:).

One good example is building a Image generator through httphandler. It
demonstrate how to use httphandler to create a handler that will return
dynamic image stream to client(so that you can display the stream through
<img> tag).

Here are the related articles about creating custom httphandlers:

#Extending ASP.NET with HttpHandlers and HttpModules (cont'd)
http://www.devx.com/dotnet/Article/6962/0/page/3

#Build an ASP.NET Thumbnail Image Generator
http://www.eggheadcafe.com/articles/20041104.asp

#Use Custom HTTP Handlers in Your ASP.NET Applications
http://www.developer.com/net/asp/article.php/3565541

Best regards,

Steven Cheng
Microsoft MSDN Online Support Lead

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we

can improve the support we provide to you. Please feel free to let my
manager know what you think of

the level of service provided. You can send feedback directly to my manager
at: msdnmg@microsoft.com.

This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------

>X-Trace-PostClient-IP: 70.67.40.71
>From: "jrl" <jrl@newsgroup.nospam>
>Newsgroups: microsoft.public.vsnet.general
>Subject: Re: can I define custom colors?

>Yes, this is exactly what I'm seeking. As this is a new area for me, I will
>probably need to find some example I can learn from (to make a custom
[quoted text clipped - 112 lines]
>>>> ==================================================
>>>> Get notification to my posts through email? Please refer to

http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif

>>>> ications.
>>>>
[quoted text clipped - 49 lines]
>>>>>
>>>>><body bgcolor=sage> //in the aspx

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