XzXdDw/XzXdDw.App/EditForms/SimulationEditor.cs

using DevExpress.XtraEditors;
using System;
using System.IO;
using System.Windows.Forms;

namespace XzXdDw.App.EditForms
{
    public partial class SimulationEditor : DevExpress.XtraEditors.XtraForm
    {
        public string SimulationFile;
        public SimulationEditor()
        {
            InitializeComponent();
            this.Text = "仿真文件选择";
            this.StartPosition = FormStartPosition.CenterParent;
        }
        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;
        }
        private void btnOk_Click(object sender, EventArgs e)
        {
            var file = btnFile.Text;
            if (string.IsNullOrEmpty(file))
            {
                XtraMessageBox.Show("仿真文件不能为空!");
                return;
            }
            if (!File.Exists(file))
            {
                XtraMessageBox.Show($"仿真文件{file}不存在!");
                return;
            }
            SimulationFile = file;
            this.DialogResult = DialogResult.OK;

        }

        private void btnFile_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.InitialDirectory = "c:\\";
            openFileDialog.Filter = "数据文件|*.dat";
            openFileDialog.RestoreDirectory = false;
            openFileDialog.FilterIndex = 1;
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                btnFile.Text = openFileDialog.FileName;
            }
        }

        private void btnFile_DragDrop(object sender, DragEventArgs e)
        {
            var files = ((System.Array)e.Data.GetData(DataFormats.FileDrop));
            if (files.Length > 0)
            {
                btnFile.Text = files.GetValue(0).ToString();

            }
        }

        private void btnFile_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                var files = ((System.Array)e.Data.GetData(DataFormats.FileDrop));

                if (files.Length == 0)
                {
                    e.Effect = DragDropEffects.None;
                    return;

                }
                string file = files.GetValue(0).ToString();
                var extension = Path.GetExtension(file);
                if (File.Exists(file) && extension.ToUpper() == ".dat".ToUpper())
                {
                    e.Effect = DragDropEffects.Link;
                }

            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }
    }
}