Handling CSS files on ASP.NET Pages

While ASP.NET can indeed be configured to handle any file type in various ways, most of us have other responsibilities to attend to, even on our days off. I'm currently intrigued by the idea of implementing an ASP.NET handling pipeline specifically for *.csx files. In this setup, I envision being able to write something like the following:

.module-div h2
{
    margin-top: 5px;
    color: [css:Color runat="server" Selector-Include="h2" /]
}

This way, in the code behind, I could easily loop through all Color controls with selectors that include "h2" and apply the same color value to them. This approach would streamline the process of updating color schemes, as I often find myself having to replace color constants when making changes to a general color theme.

asp.netcss

Answer №1

This reminds me a lot of the principles behind lesscss. If you're interested, there's a .net version that offers similar capabilities which you can check out at . It even supports class inheritance and more.

Answer №2

In the past, we utilized a straightforward .aspx page for our "dynamic" CSS implementation.

While we have a core CSS set in place, there is a need to present various site sections in distinct colors to enhance branding and assist users in navigating different areas of the site.

The key task here is to manage response encoding:

private void Page_Load(object sender, System.EventArgs e)
{
  Response.ContentType = "text/css";
}

Next, modify the front-end code as follows:

<%
string strSiteArea = this.Page.Request.QueryString["sitearea"];
string strCustomStyles = this.Page.Request.QueryString["customcssstyles"];
string extralightcolour = "";
string lightcolour = "";
string normalcolour = "";
string darkcolour = "";
string customcolour = "";

switch (strSiteArea)
{
  case "miscellaneous": 
    extralightcolour = "#F2F2F2";               
    lightcolour = "#E6E6E6";
    normalcolour = "#999999";
    darkcolour = "#666666";                 
  break;
  case "pressoffice":
    extralightcolour = "#F0F4F7";               
    lightcolour = "#E2E9EE";
    normalcolour = "#6D8DA8";
    darkcolour = "#5C768D";
  break;
  // additional cases can be added
}
%>
h1{color: <%= darkcolour %>;font-family: Arial;padding-left: 0;margin-left: 0;}
h2{color: <%= darkcolour %>;font-family: Arial;font-size: 1.2em;font-weight: bold;margin-bottom: 0;padding-bottom: 0;}
h3{color: <%= darkcolour %>;font-size: 1.1em;font-weight:normal;margin-bottom: 0;}
h4{color: <%= darkcolour %>;margin-bottom: 0;font-size: 1.1em;font-weight:normal;font-style:italic;}
.backgroundheading{margin: 0 0 0 0;background-color: <%= normalcolour %>;color: #FFF;font-weight: bold;font-family: Arial;font-size: 1.0em;text-align: left;padding: 3px 5px 3px 5px;}
.backgroundheadinglight{margin: 0 0 0 0;background-color: <%= lightcolour %>;color: #000;font-weight: bold;font-family: Arial;font-size: 1.0em;text-align: left;padding: 3px 5px 3px 5px;}
.backgroundheadingdark{margin: 0 0 0 0;background-color: <%= darkcolour %>;color: #FFF;font-weight: bold;font-family: Arial;font-size: 1.0em;text-align: left;padding: 3px 5px 3px 5px;}
.background{margin: 0 0 0 0;background-color: <%= normalcolour %>;text-align: left;padding: 3px 5px 1px 5px;}
.backgroundlight{margin: 0 0 0 0;background-color: <%= lightcolour %>;text-align: left;padding: 3px 5px 1px 5px;}
.backgrounddark{margin: 0 0 0 0;background-color: <%= darkcolour %>;text-align:left;padding: 3px 5px 1px 5px;}
.backgroundcolorextralight{background-color: <%= extralightcolour %>;}

To apply the CSS on a page, use the following snippet:

<link rel="stylesheet" href="/CSS/GenerateCss.aspx?siteArea=pressoffice" />

This approach allowed us to implement multiple color schemes while maintaining a consistent CSS style set, making it easy to adjust page appearance based on the provided query string.

Answer №3

In order to achieve this, it is necessary to create a personalized HTTP Handler. This involves crafting a class that adheres to the System.Web.IHttpHandler interface. There are numerous resources available online that provide guidance on how to accomplish this task.

Answer №4

Exploring the possibilities of Less for .NET.

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