通过代码隐藏将CANONICAL标签添加到我的SEO页面?

时间:2009-09-09 10:28:07

标签: c# asp.net vb.net seo

我正在使用带有MasterPages的ASP.NET。因此,我无法将此链接放在引用我的MasterPage的页面中。

<link rel="canonical" href="http://www.erate.co.za/" />

我需要将此链接放在我的每个页面的页面加载中。我将如何通过代码执行此操作?我正在使用VB.NET,但C#也将帮助我朝着正确的方向发展。

这就是我在后面的代码中为我的DESCRIPTION标记做的。

    Dim tag As HtmlMeta = New HtmlMeta()
    tag.Name = "description"
    tag.Content = "Find or rate any company in South Africa for FREE and rate them"
    Header.Controls.Add(tag)

提前致谢!

6 个答案:

答案 0 :(得分:13)

这是我必须做的..................

    Dim seoTag As HtmlLink = New HtmlLink()
    seoTag.Attributes.Add("rel", "canonical")
    seoTag.Href = "http://www.erate.co.za/"
    Header.Controls.Add(seoTag)

更多信息Here

答案 1 :(得分:3)

为什么不将规范元素创建为服务器控件:

<link rel="canonical" href="" runat="server" id="canonical"/>

然后操作页面(或母版页)类中的规范对象。通用标记被视为HtmlGenericControl的实例,允许用户设置任意属性:

canonical.Attributes["href"] = whatever;

答案 2 :(得分:1)

根据Richard的回答,在页面代码方面,您需要引用母版页。 尝试:

((HtmlLink)this.Page.Master.FindControl("canonical")).Href = "whatever";

或VB等价物:)

答案 3 :(得分:1)

尝试使用: 首先像这样创建BasePage类:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text.RegularExpressions;

namespace MMSoftware.TheMMSoft.UI
{
    public class BasePage : System.Web.UI.Page
    {
        private string _canonical;
        // Constructor
        public BasePage()
        {
            Init += new EventHandler(BasePage_Init);
        }

        // Whenever a page that uses this base class is initialized
        // add link canonical if available
        void BasePage_Init(object sender, EventArgs e)
        {             
            if (!String.IsNullOrEmpty(Link_Canonical))
            {
                HtmlLink link = new HtmlLink();
                link.Href = Link_Canonical;
                link.Attributes.Add(HtmlTextWriterAttribute.Rel.ToString().ToLower(), "canonical");
                link.Attributes.Add(HtmlTextWriterAttribute.Type.ToString().ToLower(), "");
                link.Attributes.Add("media", "");
                Header.Controls.Add(link);
            }
        }

        /// <summary>
        /// Gets or sets the Link Canonical tag for the page
        /// </summary>
        public string Link_Canonical
        {
            get
            {
                return _canonical;
            }
            set
            {
                _canonical = value;
            }
        }                   
    }
}

Seconds创建从基类继承的.aspx页面,如下所示:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : MMSoftware.TheMMSoft.UI.BasePage
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
}

最后一步:

<%@ Page Title=""
         Language="C#"
         MasterPageFile="~/design/MasterPage.master"
         AutoEventWireup="true"
         CodeFile="Default.aspx.cs"
         Inherits="_Default" 
         CodeFileBaseClass="MMSoftware.TheMMSoft.UI.BasePage"
         Link_Canonical="http://yourCanonicalUrl/" 
%>

请记住添加 C:\ Program Files \ Microsoft Visual Studio 9.0 \ Common7 \ Packages \ schemas \ html \ page_directives.xsd 属性:

<xsd:attribute name="Link_Canonical" vs:nonfilterable="true" /> 
部分中的

<a href="http://www.dowebpage.com">Michele - MMSoftware </a>

答案 4 :(得分:0)

我有以下设置。

创建一个继承自System.Web.UI.Page的类作为“BasePage”类型类。

为此添加方法:

public class BasePage: System.Web.UI.Page {

  // I've tended to create overloads of this that take just an href and type 
  // for example that allows me to use this to add CSS to a page dynamically
  public void AddHeaderLink(string href, 
                            string rel, 
                            string type, 
                            string media) {
    HtmlLink link = new HtmlLink();
    link.Href = href;

    // As I'm working with XHTML, I want to ensure all attributes are lowercase
    // Also, you could replace the length checks with string.IsNullOrEmpty if 
    // you prefer.
    if (0 != type.Length){
      link.Attributes.Add(HtmlTextWriterAttribute.Type.ToString().ToLower(),
                          type);
    }

    if (0 != rel.Length){
      link.Attributes.Add(HtmlTextWriterAttribute.Rel.ToString().ToLower(),
                          rel);
    }

    if (0 != media.Length){
      link.Attributes.Add("media", media);
    }

    Page.Header.Controls.Add(link);
  }
}

然后你可以创建从基类继承的.aspx页面,然后在其上调用AddHeaderLink:

public partial class MyPage : BasePage {

  protected void Page_Load(object sender, EventArgs e) {

    // Or however you're generating your canonical urls
    string cannonicalUrl = GetCannonicalUrl();

    AddHeaderLink(cannonicalUrl, "canonical", string.Empty, string.Empty);
  }
}

答案 5 :(得分:0)

这是我所做的: 在名为“ Masterpage.master”的首页中,我添加了一个contentPlaceHolder:

<asp:ContentPlaceHolder ID="forcanonical" runat="server">
</asp:ContentPlaceHolder>

然后在每个子aspx页面页面(而不是后面的代码)中,我添加了以下内容:

<asp:Content ID="Content1" runat="server" ContentPlaceHolderID="forcanonical">
    <link rel="canonical" href="http://theCanonicalUrl.com" />
</asp:Content>
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