从UWP应用程序连接到SQL Server时出错

Question

我在尝试从UWP应用程序连接到SQL Server时遇到错误，我已经激活了这些功能：

• 互联网（客户端和服务器）
• 互联网（客户）
• 专用网络（客户端和服务器）

代码如下：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using System.Data.SqlClient;


namespace App1544
{
    /// </summary>
    public sealed partial class MainPage : Page
    {
        const string ConnectionString = "SERVER = DESKTOP-DI0OR53; database= DBNAVEGANTE; user id= root; password = a";
        public MainPage()
        {
            this.InitializeComponent();
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            using(SqlConnection con = new SqlConnection(ConnectionString))
            {
                con.Open();
                label1.Text = con.State.ToString();
            }
        }
    }
}