qdr.app.tools/qfu/qfu.gui/Subforms/Common/FileSelectionCtrl.cs

using System.ComponentModel;

namespace qdr.app.tools.qfu.gui.Subforms.Common
{
    public partial class FileSelectionCtrl : UserControl
    {

        public event EventHandler? SelectedFileChanged;

        [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
        public string Caption
        {
            get => lblText.Text;
            set => lblText.Text = value;
        }

        [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
        public string SelectedFile {
            get => tbSelectedPath.Text;
            set => tbSelectedPath.Text = value;
        }

        public FileSelectionCtrl()
        {
            InitializeComponent();
        }

        private void butSelect_Click(object sender, EventArgs e)
        {
            var dlg = new OpenFileDialog
            {
                Title = lblText.Text,
                Filter = "All files (*.*)|*.*",
                Multiselect = false,
            };
            if (dlg.ShowDialog() == DialogResult.OK)
            {
               SelectedFile = dlg.FileName;
               SelectedFileChanged?.Invoke(this, EventArgs.Empty);
            }
        }
    }
}