好几天了，我快疯了？？？？？？？？？？？？？？？？？？？？
我的作法为： 
  1.我先作个首页， 
  <form id="form1" runat="server" > 
  <div > 
  <asp:Label ID="lanuage" runat="server" >Label </asp:Label > 
  <asp:DropDownList ID="drp_language" runat="server" AutoPostBack="True" OnSelectedIndexChanged="drp_language_SelectedIndexChanged" 
  Width="152px" > 
  </asp:DropDownList > 
  <asp:Button ID="btnLogon" runat="server" Text="Button" OnClick="btnLogon_Click" / > </div > 
  </form > 

后台： 
  public partial class index : System.Web.UI.Page 
  { 
  public static string strName; 

  protected void Page_Load(object sender, EventArgs e) 
  { 
  if (!Page.IsPostBack) 
  { 
  init(); 
  } 

  } 
  private void init() 
  { 
  drp_language.DataSource = TangramMiniWeb.ResourceManager.GetSupportedLanguages(); 
  drp_language.DataTextField = "name"; 
  drp_language.DataValueField = "key"; 
  drp_language.DataBind(); 

  if (drp_language.Items.Count > 0) 
  { 
  strName = drp_language.SelectedValue; 
  ShowText(drp_language.Items[0].Value); 
  } 
  } 
  private void ShowText(string userlanguage) 
  { 
  btnLogon.Text = TangramMiniWeb.ResourceManager.GetString("GO", userlanguage); 
  //strName = btnLogon.Text = MultLanuage.ResourceManager.GetString("btnLogon", userlanguage); 
  lanuage.Text = TangramMiniWeb.ResourceManager.GetString("lanuage", userlanguage); 

  } 
  protected void drp_language_SelectedIndexChanged(object sender, EventArgs e) 
  { 
  ShowText(drp_language.SelectedValue); 
  strName = drp_language.SelectedValue; 
  } 
  protected void btnLogon_Click(object sender, EventArgs e) 
  { 
  Session["selectvalue"] = drp_language.SelectedValue.ToString(); 
  Response.Redirect("tan/Default.aspx"); 
  } 
  } 

2.还写了个语言的基类： 
  public class ResourceManager 
{ 

public ResourceManager() 
{ 
  // 

} 
public static string GetString(string name,string userLanguages) 
{ 
  //通过指定属性名返回包含此属性名相关信息的hash表 
Hashtable source=LoadSorce(userLanguages); 
  if (source != null) 
  { 
  //不为空就返回其值  
  return source[name].ToString(); 
  } 
  else 
  { 
  //为空 
  return ""; 
  }