private void menuMemberInfo_Click(object sender, EventArgs e)
{
FrmMemberInfo frmMemberInfo = FrmMemberInfo.Creat();
frmMemberInfo.Show();
frmMemberInfo.Focus();
}
public static FrmMemberInfo Creat()
{
if (_frm == null)
{
_frm = new FrmMemberInfo();
}
return(_frm);
}
private void FrmMemberInfo_FormClosing(object sender, FormClosingEventArgs e)
{
//与单例保持一致
//出现这种代码的原因：Form的close()会释放当前窗体对象
_frm = null;
}