private void button_recFolder_Click(object sender, RoutedEventArgs e)
{
System.Windows.Forms.FolderBrowserDialog dlg = new System.Windows.Forms.FolderBrowserDialog();
dlg.Description = "フォルダ選択";
if (dlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
textBox_recFolder.Text = dlg.SelectedPath;
}
}