在Office应用中打开WPF窗体并且让子窗体显示在Office应用上

[DllImport("user32.dll", SetLastError = true)]
private static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

   /// <summary>
        /// 在Excle窗口上显示WPF窗体
        /// </summary>
        /// <param name="assemplyName">窗体对象所在程序集</param>
        /// <param name="paramClassFullName">窗体对象全名称</param>
        public static void ExcelShowWPFWindow(string assemplyName, string paramClassFullName)
        {
            Application.Current.Dispatcher.Invoke(new Action(() => {
                try
                {
                    Assembly assembly = Assembly.Load(assemplyName);
                    Type classType = assembly.GetType(paramClassFullName);
                    object[] constuctParms = new object[] { };
                    dynamic view = Activator.CreateInstance(classType, constuctParms);
                    Window winBox = view as Window;
                    var winBoxIntreop = new WindowInteropHelper(winBox);
                    winBoxIntreop.EnsureHandle();
                    //将Excel句柄指定为当前窗体的父窗体的句柄，参考 https://blog.csdn.net/pengcwl/article/details/7817111
                    //ExcelApp 是一个Excle应用程序对象
                    var excelHwnd = new IntPtr(OfficeApp.ExcelApp.Hwnd);
                    winBoxIntreop.Owner = excelHwnd;
                    SetParent(winBoxIntreop.Handle, excelHwnd);
                    winBox.ShowDialog();
                }
                catch (Exception ex)
                {
                    MessageBox.Show("打开窗口错误："+ex.Message);
                }
            }));
        }
    }