WPF - C# Desktop App - Is there a way to call a Windows form from C# WPF?

Question

Hello,
Is there a way to call a Windows form from C#WPF?

The idea is to create a separate message box. Or a WPF message box.

With best regards Markus

Answer 1

Hi Markus,
create your own Messagebox like this:

And CodeBehind:

using System.Windows;  
using System.Windows.Input;  
using WpfApp01;  
  
namespace WpfApp66  
{  
  public partial class MyMessageBox : Window  
  {  
    public MyMessageBox()  
    {  
      InitializeComponent();  
      this.DataContext = this;  
    }  
    public static object ShowDialog(string msg) => (new MyMessageBox() { Message = msg }).ShowDialog();  
    public string Message { get; set; }  
    public ICommand Cmd { get => new RelayCommand((state) => { ExitMessageBox((state != null && state.ToString() == "True")); }); }  
    private void ExitMessageBox(bool result)  
    {  
      this.DialogResult = result;  
      this.Close();  
    }  
  }  
}  

And using:

MyMessageBox.ShowDialog("Display my Message");  

Answer 2

namespace TestApp
{
    public static class MyMessageBox
    {
        //public static int OK = 0;
        //public static int OKCANCLE = 1;

        public enum MyMessageBoxStyle
        {
            OK = 0,
            OK_Cancel = 1,
            YES_NO = 2
        }


        public static bool? ShowDialog(string mess, MyMessageBoxStyle style) => MessageBoxT.ShowDialog(mess, style);

        private static MessageBoxIntern MessageBoxT = new MessageBoxIntern();

        private class MessageBoxIntern
        {
            public MessageBoxIntern()
            {
            }

            internal bool? ShowDialog(string mess, MyMessageBoxStyle style)
            {
                switch (style)
                {
                    case MyMessageBoxStyle.OK:
                        MessageBoxOK myMessageBoxOK = new MessageBoxOK(mess);
                        return myMessageBoxOK.ShowDialog();

Hi, Can I do it this way? SingleTon pattern is the right solution?

For each MessageBox I can expand this pattern, class MyMessageBox

How is your opinion?
anonymous user-3316 @DaisyTian-MSFT