The HTML <META> tag is used to store information about a page. Including <META> tags in your pages may make your site more search engine friendly. <META> tags must be nested immediately under the <HEAD> tag. You can specify a page's keywords and description with <META> tags. For example, the old ASP.NET implementation of my articles.aspx page had the following <META> tags:
<meta name="keywords" content="Articles, Eric Bergman-Terrell, S3, .NET, C#, dotnet, Web Services, ASP.NET, Windows Forms" /> <meta name="description" content="Magazine articles written by Eric Bergman-Terrell" />
You can programmatically add <META> tags to your pages as follows by populating an HtmlMeta object and inserting it in the page's Header.Controls container. For example, I use the following code to add <META> tags to pages on my site. The keywords object is a DataSet that contains keywords and descriptions for most of the pages on the site:
private void AddMetaTags() { if (keywords != null) { string filter = string.Format("Page = '{0}'", Request.Url.AbsolutePath); DataRow[] rows = keywords.Tables[0].Select(filter); if (rows.Length == 1) { string keywordText = rows[0]["Keywords"] as string; string descriptionText = rows[0]["Description"] as string; if (keywordText != null || descriptionText != null) { if (keywordText != null) { // Create a META tag. HtmlMeta meta = new HtmlMeta(); meta.Attributes.Add("name", "keywords"); meta.Attributes.Add("content", keywordText); Header.Controls.Add(meta); } if (descriptionText != null) { // Create a META tag. HtmlMeta meta = new HtmlMeta(); meta.Attributes.Add("name", "description"); meta.Attributes.Add("content", descriptionText); Header.Controls.Add(meta); } } } } }
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