C#操作XML文件
2022/7/11 14:21:20
本文主要是介绍C#操作XML文件,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
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; } }
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