dataGridView读取xml文件

有两种方法，推荐第二种，不同的地方已经加粗加大了。
第一种方法：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Xml;

namespace WindowsFormsApp13
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            CreateXml();


        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            //没有列名的方法
            //DataSet ds = new DataSet();
            //ds.ReadXml("try.xml");
            //this.dataGridView1.DataSource = ds.Tables[0];

            //含有列名的方法
            //中心思想就是创建DataSet对象，给DataSet对象的table添加DataTable对象，给DataTable对象添加列名，在添加DataRow对象，查找获得xml文件的节点值，给DataRow循环赋值
            DataTable dt = new DataTable();
            //添加列名
            dt.Columns.Add("书名", typeof(string));
            dt.Columns.Add("作者", typeof(string));
            dt.Columns.Add("等级", typeof(string));
            XmlDocument doc= new XmlDocument();
            doc.Load("try.xml");
            //先获得根节点
            XmlElement root= doc.DocumentElement;
            //根据根节点，获得所有的子节点
             XmlNodeList xmns=root.ChildNodes;
            //获得子节点的各种值，给每一行赋值。
            foreach (XmlNode x in xmns)
            {
                //给dt表创建行,name为节点的第一个，auther为第二个，grade为第三个
                //获得子节点的各项值，在给行数据赋值
                DataRow dr = dt.NewRow();
                 XmlNode xx= x;
                string name = x.ChildNodes[0].InnerXml;
                dr["书名"] = name;
                string auther = x.ChildNodes[1].InnerXml;
                dr["作者"] = auther;
                string grade = x.ChildNodes[2].InnerXml;
                dr["等级"] = grade;

                dt.Rows.Add(dr);//添加行
            }
            //创建DataSet对象,绑定数据
            DataSet ds = new DataSet();
            ds.Tables.Add(dt);
            dataGridView1.DataSource = dt;    

} 

/// <summary> 

/// 创建try.xml文件 

/// </summary> 

private static void CreateXml()
{
 XmlDocument doc = new XmlDocument();
 XmlDeclaration dec = doc.CreateXmlDeclaration("1.0", "utf-8", null); 
doc.AppendChild(dec);
 XmlElement books = doc.CreateElement("books");
 doc.AppendChild(books); 

XmlElement book1 = doc.CreateElement("book"); 
books.AppendChild(book1); 
XmlElement name1 = doc.CreateElement("name"); 
name1.InnerXml = "语文教材"; 
book1.AppendChild(name1); 
XmlElement auther1 = doc.CreateElement("auther"); 
auther1.InnerXml = "文者"; 
book1.AppendChild(auther1); 
XmlElement grade1 = doc.CreateElement("grade"); 
grade1.InnerXml = "语级"; 
book1.AppendChild(grade1); 

XmlElement book2 = doc.CreateElement("book"); 
books.AppendChild(book2); 
XmlElement name2 = doc.CreateElement("name"); 
name2.InnerXml = "数学教材"; 
book2.AppendChild(name2); 
XmlElement auther2 = doc.CreateElement("auther"); 
auther2.InnerXml = "数者"; 
book2.AppendChild(auther2); 
XmlElement grade2 = doc.CreateElement("grade"); 
grade2.InnerXml = "数级"; 
book2.AppendChild(grade2); 

XmlElement book3 = doc.CreateElement("book"); 
books.AppendChild(book3); 
XmlElement name3 = doc.CreateElement("name"); 
name3.InnerXml = "英语教材"; 
book3.AppendChild(name3); 
XmlElement auther3 = doc.CreateElement("auther"); 
auther3.InnerXml = "英者"; 
book3.AppendChild(auther3); 
XmlElement grade3 = doc.CreateElement("grade"); 
grade3.InnerXml = "英语级"; 
book3.AppendChild(grade3); 

doc.Save(Application.StartupPath + @"	ry.xml"); 

//MessageBox.Show("创建try.xml成功");  
  } 
 } 
}

第二种 获取数据更为简单

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Xml;
using System.Xml.Linq;

namespace WindowsFormsApp13
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            CreateXml();


        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            //没有列名的方法
            //DataSet ds = new DataSet();
            //ds.ReadXml("try.xml");
            //this.dataGridView1.DataSource = ds.Tables[0];

            //含有列名的方法
            //中心思想就是创建DataSet对象，给DataSet对象的table添加DataTable对象，给DataTable对象添加列名，在添加DataRow对象，查找获得xml文件的节点值，给DataRow循环赋值
            DataTable dt = new DataTable();
            //添加列名
            dt.Columns.Add("书名", typeof(string));
            dt.Columns.Add("作者", typeof(string));
            dt.Columns.Add("等级", typeof(string));
            //XmlDocument doc= new XmlDocument();
            //doc.Load("try.xml");

            //加载xml文件
            XElement dd = XElement.Load("try.xml");
            //获取所有book节点的集合
            var node = from n in dd.Elements("book") select n;
            foreach (var n in node)
            {
                DataRow dr = dt.NewRow();
                dr["书名"] = n.Element("name").Value;
                dr["作者"] = n.Element("auther").Value;
                dr["等级"] = n.Element("grade").Value;
                dt.Rows.Add(dr);

            }

            //创建DataSet对象,绑定数据
            DataSet ds = new DataSet();
            ds.Tables.Add(dt);
            dataGridView1.DataSource = dt;     
          //dataGridView1.DataSource=dt.tables[0];
        }

        /// <summary>
        /// 创建try.xml文件
        /// </summary>
        private static void CreateXml()
        {
            XmlDocument doc = new XmlDocument();
            XmlDeclaration dec = doc.CreateXmlDeclaration("1.0", "utf-8", null);
            doc.AppendChild(dec);
            XmlElement books = doc.CreateElement("books");
            doc.AppendChild(books);

            XmlElement book1 = doc.CreateElement("book");
            books.AppendChild(book1);
            XmlElement name1 = doc.CreateElement("name");
            name1.InnerXml = "语文教材";
            book1.AppendChild(name1);
            XmlElement auther1 = doc.CreateElement("auther");
            auther1.InnerXml = "文者";
            book1.AppendChild(auther1);
            XmlElement grade1 = doc.CreateElement("grade");
            grade1.InnerXml = "语级";
            book1.AppendChild(grade1);


            XmlElement book2 = doc.CreateElement("book");
            books.AppendChild(book2);
            XmlElement name2 = doc.CreateElement("name");
            name2.InnerXml = "数学教材";
            book2.AppendChild(name2);
            XmlElement auther2 = doc.CreateElement("auther");
            auther2.InnerXml = "数者";
            book2.AppendChild(auther2);
            XmlElement grade2 = doc.CreateElement("grade");
            grade2.InnerXml = "数级";
            book2.AppendChild(grade2);


            XmlElement book3 = doc.CreateElement("book");
            books.AppendChild(book3);
            XmlElement name3 = doc.CreateElement("name");
            name3.InnerXml = "英语教材";
            book3.AppendChild(name3);
            XmlElement auther3 = doc.CreateElement("auther");
            auther3.InnerXml = "英者";
            book3.AppendChild(auther3);
            XmlElement grade3 = doc.CreateElement("grade");
            grade3.InnerXml = "英语级";
            book3.AppendChild(grade3);



            doc.Save(Application.StartupPath + @"	ry.xml");
            //MessageBox.Show("创建try.xml成功");
        }

      


    }

}