C#操作XML文件

加载

static string strPath = "Employee.xml";
static string strID = "";

//窗体加载时加载XML文件
private void Form1_Load(object sender, EventArgs e)
{
if (File.Exists(strPath))
{
groupBox1.Enabled = false;
getXmlInfo();
}
else
groupBox1.Enabled = true;
}

#region 将XML文件内容绑定到DataGridView控件
/// <summary>
/// 将XML文件内容绑定到DataGridView控件
/// </summary>
private void getXmlInfo()
{
DataSet myds = new DataSet();
myds.ReadXml(strPath);
dataGridView1.DataSource = myds.Tables[0];
}
#endregion

创建

//创建XML文件
private void button1_Click(object sender, EventArgs e)
{
XDocument doc = new XDocument(
new XDeclaration("1.0", "utf-8", "yes"),
new XElement(textBox1.Text,
new XElement(textBox2.Text, new XAttribute(textBox3.Text, textBox10.Text),
new XElement(textBox4.Text, textBox5.Text),
new XElement(textBox6.Text, textBox7.Text),
new XElement(textBox8.Text, textBox9.Text))
)
);
doc.Save(strPath);
groupBox1.Enabled = false;
getXmlInfo();
}

添加

//添加XML元素
private void button2_Click(object sender, EventArgs e)
{
XElement xe = XElement.Load(strPath);
IEnumerable<XElement> elements1 = from element in xe.Elements("People")
select element;
//生成新的编号
string str = (Convert.ToInt32(elements1.Max(element => element.Attribute("ID").Value)) + 1).ToString("000");
XElement people = new XElement(
"People", new XAttribute("ID", str),
new XElement("Name", textBox11.Text),
new XElement("Sex", comboBox1.Text),
new XElement("Salary", textBox12.Text)
);
xe.Add(people);
xe.Save(strPath);
getXmlInfo();
}

修改

//修改XML元素
private void button3_Click(object sender, EventArgs e)
{
if (strID != "")
{
XElement xe = XElement.Load(strPath);
IEnumerable<XElement> elements = from element in xe.Elements("People")
where element.Attribute("ID").Value == strID
select element;
if (elements.Count() > 0)
{
XElement newXE = elements.First();
newXE.SetAttributeValue("ID", strID);
newXE.ReplaceNodes(
new XElement("Name", textBox11.Text),
new XElement("Sex", comboBox1.Text),
new XElement("Salary", textBox12.Text)
);
}
xe.Save(strPath);
}
getXmlInfo();
}

删除

//删除XML元素
private void button4_Click(object sender, EventArgs e)
{
if (strID != "")
{
XElement xe = XElement.Load(strPath);
IEnumerable<XElement> elements = from element in xe.Elements("People")
where element.Attribute("ID").Value == strID
select element;
if (elements.Count() > 0)
elements.First().Remove();
xe.Save(strPath);
}
getXmlInfo();
}

显示选中

 

 

 

 

//显示选中XML节点的详细信息
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
strID = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
XElement xe = XElement.Load(strPath);
IEnumerable<XElement> elements = from PInfo in xe.Elements("People")
where PInfo.Attribute("ID").Value == strID
select PInfo;
foreach (XElement element in elements)
{
textBox11.Text = element.Element("Name").Value;
comboBox1.SelectedItem = element.Element("Sex").Value;
textBox12.Text = element.Element("Salary").Value;
}
}

https://www.cnblogs.com/for-easy-fast/p/16464321.html