To set Chinese language for perticuler page you can use this code
System.Web.UI.HtmlControls.HtmlMeta _keyWords = new HtmlMeta();
Response.ContentEncoding = Encoding.GetEncoding("GB_2312-80")
_keyWords.Content = "text/html; charset=GB_2312-80"
languageMetaTag.Visible = True
languageMetaTag.Controls.Add(_keyWords)
And in design:
<%@ page language="vb" autoeventwireup="false" validaterequest="false" codebehind="xyz.aspx.vb" inherits="ABC.WebForm1" %>
<asp:placeholder id="languageMetaTag" runat="server" visible="false"/>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
What this code will do set content encoding and add meta tag in your page.