Electron.NET/ElectronNET.WebApp/Controllers/DialogsController.cs

using System.Linq;
using Microsoft.AspNetCore.Mvc;
using ElectronNET.API;
using ElectronNET.API.Entities;

namespace ElectronNET.WebApp.Controllers
{
    public class DialogsController : Controller
    {
        public IActionResult Index()
        {
            if(HybridSupport.IsElectronActive)
            {
                Electron.IpcMain.On("select-directory", async (args) => {
                    var mainWindow = Electron.WindowManager.BrowserWindows.First();
                    var options = new OpenDialogOptions
                    {
                        Properties = new OpenDialogProperty[] {
                        OpenDialogProperty.openFile,
                        OpenDialogProperty.openDirectory
                    }
                    };

                    string[] files = await Electron.Dialog.ShowOpenDialogAsync(mainWindow, options);
                    Electron.IpcMain.Send(mainWindow, "select-directory-reply", files);
                });

                Electron.IpcMain.On("error-dialog", (args) =>
                {
                    Electron.Dialog.ShowErrorBox("An Error Message", "Demonstrating an error message.");
                });

                Electron.IpcMain.On("information-dialog", async (args) =>
                {
                    var options = new MessageBoxOptions("This is an information dialog. Isn't it nice?")
                    {
                        Type = MessageBoxType.info,
                        Title = "Information",
                        Buttons = new string[] { "Yes", "No" }
                    };

                    var result = await Electron.Dialog.ShowMessageBoxAsync(options);

                    var mainWindow = Electron.WindowManager.BrowserWindows.First();
                    Electron.IpcMain.Send(mainWindow, "information-dialog-reply", result.Response);
                });

                Electron.IpcMain.On("save-dialog", async (args) =>
                {
                    var mainWindow = Electron.WindowManager.BrowserWindows.First();
                    var options = new SaveDialogOptions
                    {
                        Title = "Save an Image",
                        Filters = new FileFilter[]
                        {
                        new FileFilter { Name = "Images", Extensions = new string[] {"jpg", "png", "gif" } }
                        }
                    };

                    var result = await Electron.Dialog.ShowSaveDialogAsync(mainWindow, options);
                    Electron.IpcMain.Send(mainWindow, "save-dialog-reply", result);
                });
            }

            return View();
        }
    }
}