public static VersionForm GetInstance()
{
if (_singleInstance == null)
{
_singleInstance = new VersionForm();
}
return(_singleInstance);
}
//バージョン情報
private void VersionToolStripMenuItem_Click(object sender, EventArgs e)
{
//VersionForm versionForm = new VersionForm();
//versionForm.Show(); //モーダルダイアログとして表示
VersionForm.GetInstance().Show();
}
private void VersionForm_FormClosed(object sender, FormClosedEventArgs e)
{
_singleInstance = null;
}