Silverlight -Cookie存儲登錄信息

 創建Cookie
 DateTime expries=DateTime.UtcNow+TimeSpan.FromDays(15); //設置保存有效天數
 string cookie=string.Format("{0}={1};expries={2}",txtId1.Text,txtPassword1.Password,expries);
 HtmlPage.Document.SetProperty("Cookie", cookie); 

 調用
  private void _getCookie() {
      string[] cookies = HtmlPage.Document.Cookies.Split(';');
      foreach (string str in cookies) {
         string[] keyValues = str.Split('=');
         if (keyVlues.Length == 2) {
           this.txtId1.Text = keyValues[0];
           this.txtPassword1.Password = keyValues[1];
           return;
           }
       }
   }