private void Appbar_Message_Click(object sender, EventArgs e)
{
SmsComposeTask composeSMS = new SmsComposeTask();
var str = new StringBuilder();
str.Append("【好消息】拍书网上的书籍《");
str.Append(tblName.Text);
str.Append("》只要" + tblPrice.Text);
str.Append("元,点击" + UriContants.Domain + "/Book/Info/" + tblGuid.Text);
str.Append(" 即可查看,赶快行动吧");
composeSMS.Body = str.ToString();
//composeSMS.To = "1765432548";
composeSMS.Show();
}