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; }