C# 动态添加SEO 信息，不和静态页面重复和叠加

　　动态添加SEO 信息，不和静态页面重复和叠加，就一个方法，用到了做个记录，以后直接用就OK了，需要的同学也可以直接拿去用。

 1         /// <summary>
 2 /// 动态设置 SEO 信息
 3 /// </summary>
 4 /// <param name="title">标题</param>
 5 /// <param name="key">关键字</param>
 6 /// <param name="des">描述</param>
 7         public void setMeta(string title, string key, string des)
 8         {
 9             if (!String.IsNullOrEmpty(title))
10             {
11                 Page.Title += title;
12             }
13             if (!String.IsNullOrEmpty(key))
14             {
15                 Boolean Edited = false;
16                 for (int a_i = 0; a_i <= Page.Header.Controls.Count - 1; a_i++)
17                 {
18                     if (Page.Header.Controls[a_i].GetType() == typeof(HtmlMeta))
19                     {
20                         HtmlMeta SetMeta = (HtmlMeta)Page.Header.Controls[a_i];
21 
22                         if (SetMeta.Name.ToLower () == "keywords")
23                         {
24                             SetMeta.Content = SetMeta.Content.ToString() + " " + key;
25                             Edited = true;
26                             break;
27                         }
28                     }
29                 }
30                 if (!Edited)
31                 {
32                     HtmlMeta NewKeywords = new HtmlMeta();
33                     NewKeywords.Name = "keywords";
34                     NewKeywords.Content = key;
35                     Page.Header.Controls.Add(NewKeywords);
36                 }
37             }
38             if (!String.IsNullOrEmpty(des))
39             {
40                 Boolean Edited = false;
41                 for (int a_i = 0; a_i <= Page.Header.Controls.Count - 1; a_i++)
42                 {
43                     if (Page.Header.Controls[a_i].GetType() == typeof(HtmlMeta))
44                     {
45                         HtmlMeta SetMeta = (HtmlMeta)Page.Header.Controls[a_i];
46 
47                         if (SetMeta.Name.ToLower() == "description")
48                         {
49                             SetMeta.Content = SetMeta.Content.ToString() + " " + des;
50                             Edited = true;
51                             break;
52                         }
53                     }
54                 }
55                 if (!Edited)
56                 {
57                     HtmlMeta NewKeywords = new HtmlMeta();
58                     NewKeywords.Name = "description";
59                     NewKeywords.Content = des;
60                     Page.Header.Controls.Add(NewKeywords);
61                 }
62             }
63         }