C#OpenFileDialog非模态可能

using System;
using System.Windows.Forms;

namespace NonModalOpenFileDialog
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void SelectFileButton_Click(object sender, EventArgs e)
        {
            using (OpenFileDialog dialog = new OpenFileDialog())
            {
                dialog.Title = "选择文件";
                dialog.Filter = "所有文件 (*.*)|*.*";

                if (dialog.ShowDialog() == DialogResult.OK)
                {
                    SelectedFileTextBox.Text = dialog.FileName;
                }
            }
        }
    }
}