Question

<?xml version="1.0" standalone="yes"?>
<Subject>
  <Book>
    <Name>ASP.NET</Name>
    <Author>ABC</Author>
    <Published>2018</Published>
    <Price>$100</Price>
  </Book>
</Subject>

以上是我的xml文件，我需要在C＃中使用Windows Forms在Messsage Box中显示这些值而不编辑xml文件，在代码中我不想使用XML节点，如（名称，价。）。

修改

到目前为止我尝试过：

XmlDataDocument xmldoc = new XmlDataDocument();
XmlNodeList xmlnode;
int i = 0;
string str = null;
FileStream fs = new FileStream(
                    @"C:\\Users\\15034\\Desktop\\Book.xml", 
                    FileMode.Open, FileAccess.Read);
xmldoc.Load(fs);
xmlnode = xmldoc.GetElementsByTagName("Book");
for (i = 0; i <= xmlnode.Count - 1; i++)
{
    xmlnode[i].ChildNodes.Item(0).InnerText.Trim(); 
    str = xmlnode[i].ChildNodes.Item(0).InnerText.Trim();
    MessageBox.Show(str);
}

输出应如下所示：

ASP.NET
ABC
2018
$100

Answer 1

您可以按如下方式使用DataGridview：

 private void Display_Data(object sender, EventArgs e)
 {
      try
      {
          XmlReader xmlFile ;
          xmlFile = XmlReader.Create("Product.xml", new XmlReaderSettings());
          DataSet ds = new DataSet();
          ds.ReadXml(xmlFile);
          dataGridView1.DataSource = ds.Tables[0];
      }
      catch (Exception ex)
      {
          MessageBox.Show (ex.ToString());
      } 
  }

可以在消息框中显示使用以下内容：

 private void  Display_Message(object sender, EventArgs e)
 {
     OpenFileDialog ofd = new OpenFileDialog();
     ofd.Filter = "XML|*.xml";
     if ( ofd.ShowDialog() == DialogResult.OK)
     {
         XmlDocument xDoc = new XmlDocument();
         xDoc.Load(ofd.FileName);
         MessageBox.Show(xDoc.SelectSingleNode("FATCAFileErrorNotification/NotificationContentTxt").InnerText);
     }

Answer 2

您可以使用XDocument轻松完成：

var doc = XDocument.Load(yourxmlfile);

//Preparing string in readable format
var result = (from att in doc.Descendants("Book")
    select 
    string.Format("Name: {0}", att.Element("Name").Value) + Environment.NewLine +
    string.Format("Author: {0}", att.Element("Author").Value) + Environment.NewLine + 
    string.Format("Published: {0}", att.Element("Published").Value) + Environment.NewLine + 
    string.Format("Price: {0}", att.Element("Price").Value));

//Joining the result from XML
var message = string.Join(Environment.NewLine, result.ToArray());
MessageBox.Show(message);

正如@stuartd在评论中已经提到的那样，你的xml无效，在结束标记中缺少。

Answer 3

使用XmlDocument：

XmlDocument xmldoc = new XmlDocument();
XmlNodeList xmlnode;
int i = 0;
string str = null;
FileStream fs = new FileStream(@"Books.xml", FileMode.Open, FileAccess.Read);
xmldoc.Load(fs);
xmlnode = xmldoc.GetElementsByTagName("Book");

for (i = 0; i <= xmlnode.Count - 1; i++)
{
    for (int j = 0; j <= xmlnode[i].ChildNodes.Count-1; j++)
    {
        if (xmlnode[i].ChildNodes.Item(j).Name == "Name")
            continue;
        xmlnode[i].ChildNodes.Item(j).InnerText.Trim();
        str = xmlnode[i].ChildNodes.Item(j).InnerText.Trim();
        MessageBox.Show(str);
    }
}

使用XPath：

XPathDocument docNav = new XPathDocument("Books.xml");
XPathNavigator nav = docNav.CreateNavigator();
foreach (var item in nav.Select(@"/Subjects/Book/Author"))
{
    MessageBox.Show(item.ToString());
}

在消息框中显示XML数据

3 个答案: