界面预览
界面预览.jpg
准备XML数据
<?xml version="1.0" encoding="utf-8"?>
<Users>
<user id="994">
<name>123</name>
<age>123</age>
<gender>女</gender>
<password>123</password>
</user>
<user id="360">
<name>甄志丙</name>
<password>haha</password>
<gender>女</gender>
<age>43</age>
</user>
<user id="123">
<name>汉子</name>
<password>123abc</password>
<age>18</age>
<gender>男</gender>
</user>
<user id="222">
<name>222</name>
<age>222</age>
<gender>男</gender>
<password>2222</password>
</user>
<user id="2468">
<name>昆昆</name>
<age>26</age>
<gender>女</gender>
<password>33567</password>
</user>
<user id="888">
<name>小云</name>
<age>28</age>
<gender>男</gender>
<password>YUNWEN0305</password>
</user>
<user id="12">
<name>sudo</name>
<age>23</age>
<gender>男</gender>
<password>adsda</password>
</user>
<user id="13">
<name>sudos</name>
<age>23</age>
<gender>男</gender>
<password>adsdasas</password>
</user>
<user id="434">
<name>fdgsdfd</name>
<age>23</age>
<gender>男</gender>
<password>adsdasassd</password>
</user>
</Users>
定义XML数据对象对象的User类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace DataGridViewExample
{
class User
{
public int ID { get; set; }
public string Name { get; set; }
public Char Gender { get; set; }
public int Age { get; set; }
public string Password { get; set; }
}
}
实现代码
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 DataGridViewExample
{
public partial class UserForm : Form
{
public UserForm()
{
InitializeComponent();
}
private void UserForm_Load(object sender, EventArgs e)
{
LoadData();
}
void LoadData()
{
UserDataGridView.RowHeadersVisible = false;//取消显示第一列
//将选项模式改为选中一整行
UserDataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
//取消默认选中第一行
//UserDataGridView.SelectedRows[0].Visible = false;
//存储对象的集合
List<User> listUser = new List<User>();
//开始读取数据，赋值给集合中的对象
XmlDocument xdoc = new XmlDocument();
xdoc.Load("UserData.xml");
//获取根节点
XmlElement Users = xdoc.DocumentElement;
//获得根节点下所有子节点
XmlNodeList xnl = Users.ChildNodes;
foreach (XmlNode item in xnl)
{
//将从XML文档中读取到的数据赋值给集合中的对象的属性
listUser.Add(new User()
{
ID = Convert.ToInt32(item.Attributes["id"].Value),
Name = item["name"].InnerText,
Age = Convert.ToInt32(item["age"].InnerText),
Gender = Convert.ToChar(item["gender"].InnerText),
Password = item["password"].InnerText
});
}
//将数据赋值给DataGridView
UserDataGridView.DataSource = listUser;
}
//注册
private void RegestButton_Click(object sender, EventArgs e)
{
XmlDocument xdoc = new XmlDocument();
xdoc.Load("UserData.xml");
//获得根节点
XmlElement users = xdoc.DocumentElement;
//新添加的子节点
XmlElement user = xdoc.CreateElement("user");
user.SetAttribute("id", AddIDTextBox.Text.Trim());
XmlElement name = xdoc.CreateElement("name");
name.InnerText = AddNameTextBox.Text.Trim();
user.AppendChild(name);
XmlElement age = xdoc.CreateElement("age");
age.InnerText = AddAgeTextBox.Text.Trim();
user.AppendChild(age);
XmlElement gender = xdoc.CreateElement("gender");
gender.InnerText = AddRbManButton.Checked ? "男" : "女";
user.AppendChild(gender);
XmlElement password = xdoc.CreateElement("password");
password.InnerText = AddPasswordTextBox.Text;
user.AppendChild(password);
users.AppendChild(user);
//保存数据到XML文档
xdoc.Save("UserData.xml");
//从XML加载数据到DataGridView
LoadData();
MessageBox.Show("注册成功！");
}
//删除
private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)
{
//删除指定的行数据
//获得当前选中行的ID
string id = UserDataGridView.SelectedRows[0].Cells[0].Value.ToString();
//根据ID进行删除
XmlDocument xdoc = new XmlDocument();
xdoc.Load("UserData.xml");
XmlElement users = xdoc.DocumentElement;
//获得要删除的节点
XmlNode xn = users.SelectSingleNode("/Users/user[@id=" + id +"]");
//通过父节点移除子节点，包括子节点下面的节点
users.RemoveChild(xn);
//xn.RemoveAll();//删除子节点，但是自己还在
xdoc.Save("UserData.xml");
LoadData();
MessageBox.Show("删除成功！");
}
//赋值
private void UserDataGridView_CellClick(object sender, DataGridViewCellEventArgs e)
{
//将选中行的数据赋值给文本框
UpdateIDTextBox.Text = UserDataGridView.SelectedRows[0].Cells[0].Value.ToString();
UpdateNameTextBox.Text = UserDataGridView.SelectedRows[0].Cells[1].Value.ToString();
UpdateAgeTextBox.Text = UserDataGridView.SelectedRows[0].Cells[3].Value.ToString();
UpdatePasswordTextBox.Text = UserDataGridView.SelectedRows[0].Cells[4].Value.ToString();
string gender = UserDataGridView.SelectedRows[0].Cells[2].Value.ToString();
if (gender=="男")
{
UpdateRbManButton.Checked = true;
}
else
{
UpdateRbWomanButton.Checked = true;
}
}
//修改
private void UpdateButton_Click(object sender, EventArgs e)
{
XmlDocument xdoc = new XmlDocument();
xdoc.Load("UserData.xml");
XmlElement users = xdoc.DocumentElement;
//根据ID修改其它值
string id = UpdateIDTextBox.Text;
XmlNode xn = users.SelectSingleNode("/Users/user[@id=" + id + "]");
xn["name"].InnerText = UpdateNameTextBox.Text;
xn["age"].InnerText = UpdateAgeTextBox.Text;
xn["password"].InnerText = UpdatePasswordTextBox.Text;
string gender = UpdateRbManButton.Checked ? "男" : "女";
xn["gender"].InnerText = gender;
MessageBox.Show("修改成功！");
xdoc.Save("UserData.xml");
LoadData();
}
}
}
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