linq to xml
static string strPath = "Employee.xml";
添加元素
//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XML元素
//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(); }
删除元素
//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(); }
显示详细信息
//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; } }