管理窗体如下
操作的xml文件如下：
<?xml version="1.0" encoding="utf-8"?>
<Books>
<Book Author="利亚南" NO="002">
<Title>系统自动化控制</Title>
<KM>计算机</KM>
<Price>120</Price>
</Book>
<Book Author="李金昌" NO="003">
<Title>计算机原理</Title>
<KM>计算机科学</KM>
<Price>110</Price>
</Book>
<Book Author="李金昌" NO="003">
<Title>计算机原理</Title>
<KM>计算机科学</KM>
<Price>110</Price>
</Book>
<Book Author="李金昌" NO="003">
<Title>计算机原理</Title>
<KM>计算机科学</KM>
<Price>110</Price>
</Book>
<Book Author="李金昌" NO="003">
<Title>计算机原理</Title>
<KM>计算机科学</KM>
<Price>110</Price>
</Book>
<Book Author="李金昌" NO="003">
<Title>计算机原理</Title>
<KM>计算机科学</KM>
<Price>110</Price>
</Book>
</Books>
控制代码如下：
private string path = @"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml";
/// <summary>
/// 构造
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
//if (!File.Exists(@"D:\My Documents\WindowsApplic\b.xml"))
//{
// File.CreateText(@"D:\My Documents\WindowsApplic\b.xml");
//}
XmlDocument xmldoc = new XmlDocument();
XmlDeclaration xmldcl = xmldoc.CreateXmlDeclaration("1.0", "utf-8", null);
xmldoc.AppendChild(xmldcl);
XmlElement xe = xmldoc.CreateElement("", "Books", "");
xmldoc.AppendChild(xe);
xmldoc.Save(@"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml");
}
/// <summary>
/// 添加事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(@"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml");
XmlNode root = xmldoc.SelectSingleNode("Books");
XmlElement xmlnode = xmldoc.CreateElement("Book");
XmlElement xe = xmlnode;
xe.SetAttribute("Author", TxtAuthor.Text);
xe.SetAttribute("NO", TxtNo.Text);
XmlElement xe1 = xmldoc.CreateElement("Title");
xe1.InnerText = TxtTitle.Text;
xmlnode.AppendChild(xe1);
XmlElement xe2 = xmldoc.CreateElement("KM");
xe2.InnerText = TxtKM.Text;
xmlnode.AppendChild(xe2);
XmlElement xe3 = xmldoc.CreateElement("Price");
xe3.InnerText = TxtPrice.Text;
xmlnode.AppendChild(xe3);
XmlNode xn = (XmlNode)xmlnode;
root.AppendChild(xn);
xmldoc.Save(@"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml");
}
/// <summary>
/// 读取
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button6_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
ds.ReadXml(@"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml");
return;
}
/// <summary>
/// 查看事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
string author= TxtAuthor.Text;//作者
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(@"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml");
XmlNode xn = xmldoc.FirstChild.NextSibling;
XmlNodeList nl = xn.ChildNodes;
foreach (XmlNode xni in nl)
{
XmlElement xe=(XmlElement) xni;
if (xe.GetAttribute("Author") == TxtAuthor.Text)
{
string str = "作者：" + xe.GetAttribute("Author") + ",编号：" + xe.GetAttribute("NO") + "，书名：" + xe.ChildNodes[0].InnerText + "，科目：" + xe.ChildNodes[1].InnerText+"，价格："+xe.ChildNodes[2].InnerText;
MessageBox.Show(str);
//xe.ParentNode.RemoveChild(xe);
}
}
xmldoc.Save(@"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml");
}
/// <summary>
/// 删除
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button4_Click(object sender, EventArgs e)
{
string author = TxtAuthor.Text;//作者
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(@"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml");
XmlNode xn = xmldoc.FirstChild.NextSibling;
XmlNodeList nl = xn.ChildNodes;
foreach (XmlNode xni in nl)
{
XmlElement xe = (XmlElement)xni;
if (xe.GetAttribute("Author") == TxtAuthor.Text||xe.GetAttribute("N0")==TxtNo.Text)
{
string str = "作者：" + xe.GetAttribute("Author") + ",编号：" + xe.GetAttribute("NO") + "，书名：" + xe.ChildNodes[0].InnerText + "，科目：" + xe.ChildNodes[1].InnerText + "，价格：" + xe.ChildNodes[2].InnerText;
MessageBox.Show(str);
xe.ParentNode.RemoveChild(xe);
}
}
xmldoc.Save(@"D:\My Documents\WindowsApplication1\WindowsApplication1\b.xml");
}
/// <summary>
/// 修改节点
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button5_Click(object sender, EventArgs e)
{
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(path);
XmlNode xn1 = xmldoc.FirstChild.NextSibling;
XmlNodeList nl = xn1.ChildNodes;
foreach(XmlNode xn in nl)
{
if (((XmlElement)xn).GetAttribute("Author") == TxtAuthor.Text || ((XmlElement)xn).GetAttribute("NO") == TxtNo.Text)
{
((XmlElement)xn).SetAttribute("Author",TxtAuthor.Text);
((XmlElement)xn).SetAttribute("NO",TxtNo.Text);
xn.ChildNodes[0].InnerText = TxtTitle.Text;
xn.ChildNodes[1].InnerText = TxtKM.Text;
xn.ChildNodes[2].InnerText = TxtPrice.Text;
}
}
xmldoc.Save(path);
}