frog.raindrop.jp.knowledge

private void Button_Click (object sender, RoutedEventArgs e)
{
    var openFileDialog = new Microsoft.Win32.OpenFileDialog ();
    openFileDialog.Filter = "C# ソースファイル|*.cs|すべてのファイル|*.*";
    openFileDialog.InitialDirectory = System.Environment.GetFolderPath (Environment.SpecialFolder.MyDocuments);
    openFileDialog.CheckFileExists = true;
    openFileDialog.Multiselect = true;
    openFileDialog.ShowReadOnly = false;
    openFileDialog.Title = "ソースファイルの選択";
    var result= openFileDialog.ShowDialog ();
    if (result ?? false)
    {
        MessageBox.Show (openFileDialog.FileNames.Aggregate ((str, nextstr) => str + "\n" + nextstr));
    }
}