vc读写xml

今天对XML文件进行了一些简单的读写操作，下面来具体实现步骤：

首先：建立一个基于Dialog的MFC工程，工程名为OperateXML，然后在对话框上添加两个按钮("Create"和"GetData"和一个ListControl控件(用来显示数据)，首先要导入库文件#import "msxml3.dll"using namespace MSXML2;主要用来实现XML文件的相关操作，双击"Create"按钮进入代码编写，代码如下：void COperateXML::OnBtnCreate() {// TODO: Add your control notification handler code here::CoInitialize(NULL); //初始化COMMSXML2::IXMLDOMDocumentPtr pDoc;MSXML2::IXMLDOMElementPtr xmlRoot;HRESULT hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument30));if(!SUCCEEDED(hr)){   MessageBox("Error");   return;}pDoc->raw_createElement((_bstr_t)(char*)"china", &xmlRoot);pDoc->raw_appendChild(xmlRoot, NULL);

MSXML2::IXMLDOMElementPtr childNode;pDoc->raw_createElement((_bstr_t)(char*)"city", &childNode);childNode->Puttext("shanghai");childNode->setAttribute("population", "7000");childNode->setAttribute("area", "2000");xmlRoot->appendChild(childNode);

pDoc->raw_createElement((_bstr_t)(char*)"city", &childNode);childNode->Puttext("beijing");childNode->setAttribute("population", "39999");childNode->setAttribute("area", "3322");xmlRoot->appendChild(childNode);

pDoc->save("D://test.xml");}

双击"GetData"按钮进入代码编写，代码如下：void COperateXML::OnBtnGet() {// TODO: Add your control notification handler code herem_list.DeleteAllItems();MSXML2::IXMLDOMDocumentPtr pDoc;HRESULT hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument30));if(!SUCCEEDED(hr)){   MessageBox("Error!");   return;}pDoc->load("D://test.xml");MSXML2::IXMLDOMElementPtr childNode;childNode = (MSXML2::IXMLDOMElementPtr)(pDoc->selectSingleNode("//city"));

MSXML2::DOMNodeType nodeType;childNode->get_nodeType(&nodeType);

MSXML2::IXMLDOMNamedNodeMapPtr pAttrs = NULL;MSXML2::IXMLDOMNodeListPtr nodeList;MSXML2::IXMLDOMNodePtr pAttrItem;childNode->get_attributes(&pAttrs);childNode->get_childNodes(&nodeList);long nCount, iCount;pAttrs->get_length(&nCount); //获取节点属性个数nodeList->get_length(&iCount); //获取节点个数for(int i = 0; i < iCount; i++) //根据需要可以添加数据到ListControl中{   for(int j = 0; j < nCount; j++)   {    pAttrs->get_item(j, &pAttrItem);    CString strAttrName = (char*)(_bstr_t)pAttrItem->nodeName;    CString strAttrValue = (char*)(_bstr_t)pAttrItem->nodeTypedValue;    m_list.InsertItem(i, strAttrName);    m_list.SetItemText(i, 1, strAttrValue);   }}}

为ListControl控件绑定一个操作变量

CListCtrl m_list;

在OnInitDialog中初始化，代码如下：

BOOL COperateXML::OnInitDialog(){// TODO: Add extra initialization herem_list.InsertColumn(0, "人口");m_list.InsertColumn(1, "Num");m_list.InsertColumn(1, "面积");m_list.InsertColumn(1, "Num");CRect rect;m_list.GetClientRect(&rect);int width = (rect.right - rect.left) / 4;m_list.SetColumnWidth(0, width);m_list.SetColumnWidth(1, width);m_list.SetColumnWidth(2, width);m_list.SetColumnWidth(3, width);}

F7编译程序，Ctrl＋F5查看显示结果，至此一个简单的操作XML文件的实现已经成功的完成了。