asp.net動態設定頁面的title,meta標籤

最後更新：2018-12-06 來源：互聯網

上載者：User

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// 設定關鍵字和頁面描述
public void setMeta(string key,string des)
{
HtmlMeta
keywords = new HtmlMeta(), // keywords
description = new HtmlMeta(); // description
keywords.Name = "keywords";
keywords.Content = key;

description.Name = "description";
description.Content = des;

Page.Header.Controls.Add(keywords);
Page.Header.Controls.Add(description);
}

在ASP.NET編程中，由於經常採用一個頁面通過不同的參數來顯示不同的內容，因此常常需要實現動態輸出不同的html header, 比如title, keywords, descrtptions等。

推薦的簡單做法如下:

protected void Page_Load(object sender, EventArgs e)
{
//Page title
Page.Title = "This is a title and meta test page.";

//Encode/Content type
HtmlMeta encode = new HtmlMeta();
encode.HttpEquiv = "Content-Type";
encode.Content = "text/html; charset=utf-8";
Page.Header.Controls.Add(encode);

//Language
HtmlMeta lang = new HtmlMeta();
lang.HttpEquiv = "Content-Language";
lang.Content = "zh-cn";
Page.Header.Controls.Add(lang);

//Description
HtmlMeta desc = new HtmlMeta();
desc.Name = "Description";
desc.Content = "Test the meta controls";
Page.Header.Controls.Add(desc);

//Keyword
HtmlMeta keywords = new HtmlMeta();
keywords.Name = "keywords";
keywords.Content = "title,meta,test,page";
Page.Header.Controls.Add(keywords);

//Link/CSS
HtmlLink cssLink = new HtmlLink();
cssLink.Href = "MasterPage.css";
cssLink.Attributes.Add("rel", "stylesheet");
cssLink.Attributes.Add("type", "text/css");
Page.Header.Controls.Add(cssLink);
}

瀏覽時輸出的頁面源碼便會達到如下效果：

<head><title>
This is a title and meta test page.
</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta http-equiv="Content-Language" content="zh-cn" /><meta name="Description" content="Test the meta controls" /><<meta name="keywords" content="title,meta,test,page" /><link href="MasterPage.css" rel="stylesheet" type="text/css" /></head>

由於需要動態修改Header的Controls集合，因此如果放在使用者自訂控制項的Page_Onload事件中因為已經太遲而到處出現異常。對於希望用通用的控制項實現這一功能的場合，建議封裝一個普通的類，然後在MasterPager或者Page的Page_OnLoad中調用一下即可。

#region PAGE HEAD

//Page meta information

public void BackHeadContent(HtmlControl htmlCtrl)
{
Content(htmlCtrl, "網站後台管理系統", "~/CssStyle/SiteStyles.css");
}

public void HeadContent(HtmlControl htmlCtrl, string strPageTitle)
{
Content(htmlCtrl, strPageTitle, "~/CssStyle/Styles.css");
}
private void Content(HtmlControl htmlCtrl, string strTitle,string cssFile)
{
//Title
HtmlTitle title = new HtmlTitle();
title.Text = strTitle;
htmlCtrl.Controls.Add(title);

//Link/CSSfile:
HtmlLink cssLink = new HtmlLink();
cssLink.Href = cssFile;
cssLink.Attributes.Add("rel", "stylesheet");
cssLink.Attributes.Add("type", "text/css");
htmlCtrl.Controls.Add(cssLink);

HtmlMeta
author = new HtmlMeta(), // author
copyright = new HtmlMeta(), // copyright
date = new HtmlMeta(), // date
keywords = new HtmlMeta(), // keywords
description = new HtmlMeta(), // description
robots = new HtmlMeta();// robots

author.Name = "Author";
author.Content = "Insus.NET";

date.Name = "date";
date.Content = DateTime.Now.ToShortDateString() + " " + DateTime.Now.ToShortTimeString();

keywords.Name = "keywords";
keywords.Content = "Insus ";

description.Name = "description";

robots.Name = "robots";
robots.Content = "all";

string[] InsusWords = "VISUAL STUDIO 2003,VISUAL STUDIO 2005,Microsoft SQL Server 2005,ASP.NET,ASP.NET 2.0,VB.NET,C#,AJAX,LINQ"
.Replace("\\r", string.Empty)
.Replace("\\n", string.Empty)
.Replace(">br />", string.Empty)
.Replace(",", string.Empty)
.Replace("\\'", string.Empty)
.Split(' ');

foreach (string word in InsusWords)
keywords.Content += word + ",";
if (keywords.Content.ToString().Length > 1024)
{
keywords.Content = keywords.Content.Substring(0, keywords.Content.IndexOf(" ", 1024));
}

description.Content = "This web site use asp.net2.0 and C# and Ajax technology";
if (description.Content.ToString().Length > 1024)
{
description.Content = description.Content.Substring(0, description.Content.IndexOf(" ", 1024));
}

htmlCtrl.Controls.Add(author);
htmlCtrl.Controls.Add(copyright);
htmlCtrl.Controls.Add(date);
htmlCtrl.Controls.Add(keywords);
htmlCtrl.Controls.Add(description);
htmlCtrl.Controls.Add(robots);
}

#endregion PAGE HEAD

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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