4.删除元素

CMarkup xml;
xml.Load("UserInfo.xml");
BOOL bFind = true;
xml.ResetMainPos();
while (bFind)
{
    bFind = xml.FindChildElem("UserID");
    if (bFind)
    {
        //此时接点还是父接点
        CString strData = _T("");
        strData = xml.GetChildData();
        if (strData=="luo")
        {
            xml.RemoveChildElem();
            xml.Save("UserInfo.xml");
            break;
        }
    }
}

》测试用XML文件2：

见第二点浏览。类似
上面的例子里面没有属性这些东西，下面的一个例子是有属性的
//UserInfo1.xml

<?xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
    <User UserID="UserID00" UserPwd="UserPwd00" UserLevel="158" />
    <User UserID="UserID01" UserPwd="UserPwd01" UserLevel="162" />
    <User UserID="UserID02" UserPwd="UserPwd02" UserLevel="165" />
    <User UserID="UserID03" UserPwd="UserPwd03" UserLevel="168" />
    <User UserID="UserID04" UserPwd="UserPwd04" UserLevel="171" />
    <User UserID="UserID05" UserPwd="UserPwd05" UserLevel="175" />
    <User UserID="UserID06" UserPwd="UserPwd06" UserLevel="178" />
    <User UserID="UserID07" UserPwd="UserPwd07" UserLevel="181" />
    <User UserID="UserID08" UserPwd="UserPwd08" UserLevel="184" />
    <User UserID="UserID09" UserPwd="UserPwd09" UserLevel="188" />
</UserInfo>

》产生文件

CString strID = _T("");
CString strPwd = _T("");
CMarkup xml;
xml.SetDoc("<?xml version="1.0" encoding="UTF-8"?>");
xml.AddElem("UserInfo");
xml.IntoElem();
for (int i=0; i<10; i++)
{
    //产生一个随机数，作为权限
    srand(UINT(time(NULL)+i));
    int nLevel = rand()%256;
    strID.Format("UserID%02d",i);
    strPwd.Format("UserPwd%02d",i);
    xml.AddElem("User");
    xml.AddAttrib("UserID",strID);
    xml.AddAttrib("UserPwd",strPwd);
    xml.AddAttrib("UserLevel",nLevel);
}
xml.OutOfElem();
xml.Save("UserInfo1.xml");