HandyControl/src/Shared/HandyControlDemo_Shared/ViewModel/Controls/ImageBrowserDemoViewModel.cs

using System;
using GalaSoft.MvvmLight.Command;
using HandyControl.Controls;

namespace HandyControlDemo.ViewModel
{
    public class ImageBrowserDemoViewModel
    {
        public RelayCommand OpenImgCmd => new(() =>
            new ImageBrowser(new Uri("pack://application:,,,/Resources/Img/1.jpg")).Show());
    }
}