WPF检测窗口是否存在并且将优先级设置第一以及检测是否有网络

主要使用的是user32.dll(核心规则是通过窗口的title来查找的)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace *******.utility
{
    /// <summary>
    /// 窗口的工具类
    /// </summary>
    public class WindowHelper
    {
        [DllImport("user32.dll")]
        private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        [DllImport("user32.dll")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);
        [DllImport("user32.dll")]
        private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
        private const int SW_RESTORE = 9;

        /// <summary>
        /// 使指定的窗口显示在最前面(包括最小化的情况)
        /// </summary>
        /// <param name="windowTitle">窗口的标题</param>
        public static void BringWindowToFront(string windowTitle)
        {
            IntPtr hWnd = FindWindow(null, windowTitle);

            if (hWnd != IntPtr.Zero)
            {
                ShowWindow(hWnd, SW_RESTORE);

                SetForegroundWindow(hWnd);
            }
            // else 就是没找到此窗口，可以修改函数的返回值来进行判断窗口是否存在
        }
        // 判断是否有网络
        [DllImport("wininet.dll", EntryPoint = "InternetGetConnectedState")]
        public extern static bool InternetGetConnectedState(out int conState, int reader);

        public static bool IsNetworkConnected
        {
            get
            {
                return InternetGetConnectedState(out int n, 0);
            }
        }
    }
}