In this short tutorial, I am going to show you how to use the HtmlLink class to add a stylesheet to the header of an ASP.Net master page. You can also use this in the same way for a standard aspx page.
The first thing to do is to create a HtmlLink object.
HtmlLink styleLink = new HtmlLink();Next I'll add two attributes to the link:
styleLink.Attributes.Add("rel", "stylesheet");
styleLink.Attributes.Add("type", "text/css");Finally, I'll set the location of the stylesheet to load:
styleLink.Href = "http://mydomain.com/css/mystylesheet.css";The final step is to add this styleLink to the header. I usually do this in the Page_Load event.
protected void Page_Load(object sender, EventArgs e)
{
HtmlLink styleLink = new HtmlLink();
styleLink.Attributes.Add("rel", "stylesheet");
styleLink.Attributes.Add("type", "text/css");
// Get the stylesheet from DB or build up string
styleLink.Href = "http://mydomain.com/css/mystylesheet.css";
this.Page.Header.Controls.Add(styleLink);
}When executed this code will send the following HTML to the browser:
<link rel="stylesheet" type="text/css" href="http://mydomain.com/css/mystylesheet.css" />
Meta Tags
You can use a very similar technique to add meta information to the header, for example keywords and description. Instead of using the HtmlLink class, use a HtmlMeta class.
HtmlMeta meta = new HtmlMeta();
meta.Attributes.Add("name", "keywords");
meta.Attributes.Add("content", "these, are, my, html, meta, keywords");
Page.Header.Controls.Add(meta);When executed this code will send the following HTML to the browser:
<meta name="keywords" content="these, are, my, html, meta, keywords" />
