public MainForm()
 {
     InitializeComponent();
     comboBox_SendType.SelectedIndex = 0;
     FilePath = ConfigurationManager.AppSettings["FilePath"].ToString().Trim();
     textBox_FilePath.Text     = AppSettingUtils.GetAppSettingsValue("FilePath");
     textBox_YHClientPath.Text = AppSettingUtils.GetAppSettingsValue("YHClientPath");
 }
        private void button_YHClientPath_Click(object sender, EventArgs e)
        {
            OpenFileDialog dialog = new OpenFileDialog();

            dialog.Multiselect = false;//该值确定是否可以选择多个文件
            dialog.Title       = "请选择文件";
            dialog.Filter      = "EXE文件|*.exe;*.exe";
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                textBox_YHClientPath.Text = dialog.FileName;
                FilePath = dialog.FileName;
                AppSettingUtils.UpdateAppSettings("YHClientPath", dialog.FileName);
            }
        }