/// <summary>
/// 添加按钮事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Add_Click(object sender, EventArgs e)
{
addCommand ac = addCommand.getInstance();
ac.FormClosing += Ac_FormClosing;
ac.Show();
}
public static addCommand getInstance()
{
if (_instance == null || _instance.IsDisposed)
{
_instance = new addCommand();
}
return(_instance);
}