Silverlight -Cookie存储登录信息

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

 调用
  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;
          }
      }
   }