VC 问题....新学VC 好多不懂...

大家帮帮忙，看下
void CMyView::Onbianhao()
{
// TODO: Add your command handler code here
CDlgQuery Dlgquery;
CString value;
if(Dlgquery.DoModal()==IDOK)
{
value="职工编号='"+Dlgquery.m_query+"'";
m_pSet -> m_strFilter = value;
m_pSet->Requery ();
UpdateData (FALSE);
}
} 筛选程序，这个是对的



void CMyView::Onxingbie()
{
// TODO: Add your command handler code here
CDlgQuery Dlgquery;
CString value;
if(Dlgquery.DoModal()==IDOK)
{
value="职工性别 = '"+Dlgquery.m_query+"'";
m_pSet -> m_strFilter = value;
m_pSet->Requery ();
UpdateData (FALSE);
}

}

void CMyView::Onzhicheng()
{
// TODO: Add your command handler code here
CDlgQuery Dlgquery;
CString value;
if(Dlgquery.DoModal()==IDOK)
{
value="职称='"+Dlgquery.m_query+"'";
m_pSet -> m_strFilter = value;
m_pSet->Requery ();
UpdateData (FALSE);
}
}
这两个是错的...为什么？和类型有关吗？？
完全不明白的说...希望能解释下~~我是新人..谢谢帮忙