C# 窗体置顶

实例链接:Windows窗体置顶C#/wpf编程-C#文档类资源-CSDN下载 

//引用
using System.Runtime.InteropServices;
using System.Windows.Interop;

//GetActiveWindow返回线程的活动窗口，而不是系统的活动窗口。如果要得到用户正在**的窗口，应该使用 GetForegroundWindow
[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
public static extern IntPtr GetForegroundWindow();

[DllImport("user32.dll ")]
//设置窗体置顶
private static extern bool SetForegroundWindow(IntPtr hWnd);

//窗体句柄
private IntPtr handle = IntPtr.Zero;
public IntPtr Handle { get => handle; set => handle = value; }



private void Window_Loaded(object sender, RoutedEventArgs e)
{
      handle = new WindowInteropHelper(this).Handle;
      SetForegroundWindow(handle);
}