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File: App_Code\DesignSection.cs
using System;
using System.Configuration;
using System.Drawing;
namespace MyNamespace
{
public class DesignSection : ConfigurationSection
{
[ConfigurationProperty("backcolor", DefaultValue = "lightblue", IsRequired = true)]
public Color BackColor
{ get { return (Color)this["backcolor"]; }
set { this["backcolor"] = value; }
}
[ConfigurationProperty("styleSheetUrl", DefaultValue = "~/styles/style.css", IsRequired = true)]
[RegexStringValidator(".css$")]
public string StyleSheetUrl
{
get { return (string)this["styleSheetUrl"]; }
set { this["styleSheetUrl"] = value; }
}
public DesignSection(Color backcolor, string styleSheetUrl)
{
this.BackColor = backcolor;
this.StyleSheetUrl = styleSheetUrl;
}
public DesignSection()
{
}
}
}
Register it in a configuration file.
File: Web.config
<configuration>
<configSections>
<sectionGroup name="system.web">
<section
name="design"
type="MyNamespace.DesignSection"
allowLocation="true"
allowDefinition="Everywhere"/>
</sectionGroup>
</configSections>
<system.web>
<design
backcolor="red"
styleSheetUrl="~/styles/style.css"/>
</system.web>
</configuration>
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