WPF GridView动态添加项并读取数据

假设数据库有如下表，

首先我们创建一个WPF工程，界面如下

 <Window x:Class="WpfApplication2.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:WpfApplication2"
         mc:Ignorable="d"
         Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">
     <Grid>
         <ListView x:Name="listview">
             <ListView.View>
                 <GridView x:Name="gridview"></GridView>
             </ListView.View>
         </ListView>
     </Grid>
 </Window>

然后创建配置文件。这里我用的是XML文件，

 这里我们假设只显示Name,Height,Age三个字段 ，所以配置文件中只增加三项。

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<List>
    <Item Header="Name" Width="100"></Item>
    <Item Header="Height" Width="80"></Item>
    <Item Header="Age" Width="80"></Item>
</List>

下面是实现代码

 using System;
 using System.Collections.Generic;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
 using System.Xml.Linq;
 using System.Xml.XPath;
 using System.Data;
 using System.Data.SqlClient;
 using System.Configuration;
 using System.Globalization;

 namespace WpfApplication2
 {
     /// <summary>
     /// MainWindow.xaml 的交互逻辑
     /// </summary>
     public partial class MainWindow : Window
     {
         public MainWindow()
         {
             InitializeComponent();
         }

         private void Window_Loaded(object sender, RoutedEventArgs e)
         {
             //动态添加项
             DynamicAddItem();
             //显示数据
             DataTable dt = GetData();
             this.listview.ItemsSource = dt.DefaultView;

         }

         /// <summary>
         /// 动态添加列表项
         /// </summary>
         private void DynamicAddItem()
         {
             List<TestItem> list = GetAllItems();
             foreach (var item in list)
             {
                 GridViewColumn column = new GridViewColumn();
                 column.Header = item.Header;
                 column.Width = item.Width;
                 if (item.Header == "Age")
                 {
                     //有时候我们可能会用到数据转换
                     //这里以年龄后面加个岁为例
                     AgeConverter converter = new AgeConverter();
                     column.DisplayMemberBinding = new Binding(item.Header) { Converter = converter};
                 }
                 else
                 {
                     column.DisplayMemberBinding = new Binding(item.Header);
                 }
                 this.gridview.Columns.Add(column);
             }
         }

         /// <summary>
         /// 从配置文件读取要显示的项
         /// </summary>
         /// <returns></returns>
         private List<TestItem> GetAllItems()
         {
             List<TestItem> list = new List<TestItem>();
             XDocument doc = XDocument.Load("list.xml");
             var result = doc.XPathSelectElements("List/Item");
             if(result != null)
             {
                 foreach (var item in result)
                 {
                     TestItem ti = new TestItem();
                     ti.Header = item.Attribute("Header").Value;
                     ti.Width = Convert.ToInt32(item.Attribute("Width").Value);
                     list.Add(ti);
                 }
             }
             return list;
         }

         /// <summary>
         /// 从数据库获取数据
         /// </summary>
         /// <returns></returns>
         private DataTable GetData()
         {
             DataTable dt = new DataTable();
             string sql = "";
             string conStr = ConfigurationManager.ConnectionStrings["conStr"].ConnectionString;
             try
             {
                 SqlConnection con = new SqlConnection(conStr);
                 sql = "select * from Student";
                 SqlDataAdapter sda = new SqlDataAdapter(sql,con);
                 sda.Fill(dt);
                 return dt;
             }
             catch(Exception ex)
             {
                 MessageBox.Show(ex.Message);
                 return dt;
             }
         }
     }

     struct TestItem
     {
         public string Header { get; set; }

         public int Width { get; set; }
     }

     public class AgeConverter : IValueConverter
     {
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
         {
             return value + "岁";
         }

         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
         {
             throw new NotImplementedException();
         }
     }

 }

运行效果