public static FrmTableInfo Creat()
{
if (_frm == null)
{
_frm = new FrmTableInfo();
}
return(_frm);
}
private void menuTableInfo_Click(object sender, EventArgs e)
{
FrmTableInfo frmTableInfo = FrmTableInfo.Creat();
frmTableInfo.RefreshMain += LoadHallInfo;
frmTableInfo.Show();
frmTableInfo.Focus();
}
private void FrmTableInfo_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;
}