public static VersionForm GetInstance()
{
if (_singInstance == null)
{
_singInstance = new VersionForm();
}
return(_singInstance); //自分自身のオブジェクトを探す
}
private void VersionToolStripMenuItem_Click(object sender, EventArgs e)
{
//VersionForm versionForm = new VersionForm();
VersionForm.GetInstance().Show();
//versionForm.Show(); //モーダルダイアログとして表示
}
private void VersionForm_FormClosed(object sender, FormClosedEventArgs e)
{
_singInstance = null;
}