如何在 WPF 中显示表格
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How to show a table in a WPF
提问by Emmet
I need help with a simple project I am doing in Visual Studio just to learn coding a little bit. I would like to show a table containing objects from a class called Car in a WPF, and this table should be done programmatically.
我需要帮助我在 Visual Studio 中做一个简单的项目，只是为了学习一点编码。我想显示一个表，其中包含来自 WPF 中名为 Car 的类的对象，并且该表应该以编程方式完成。
So, I added a ListView in MainWindow.xaml and set the name for GridView to GridView1
因此，我在 MainWindow.xaml 中添加了一个 ListView 并将 GridView 的名称设置为 GridView1
<Window x:Class="Test.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<ListView HorizontalAlignment="Center" Height="100" Margin="0,10,0,0" VerticalAlignment="Top" Width="100">
<ListView.View>
<GridView x:Name="GridView1">
<GridViewColumn/>
</GridView>
</ListView.View>
</ListView>
</Grid>
</Window>
In the MainWindow.xaml.cs I did this
在 MainWindow.xaml.cs 我做了这个
using System;
...
//Add this to use DataTable
using System.Data;
namespace Test
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
//create some objects
Car ferrari = new Car("Ferrari","Front-Wheel");
Car mercedes = new Car("Mercedes","Rear-Wheel");
//create a DataTable
DataTable dt = new DataTable();
//add 2 columns
dt.Columns.Add("Vehicle Name");
dt.Columns.Add("Vehicle Drive");
//add 2 rows
dt.Rows.Add(ferrari.Name, ferrari.Drive);
dt.Rows.Add(mercedes.Name, mercedes.Drive);
//bind it to GridView
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
}
The problem are the last 2 lines, Visual Studio says it does not contain a definition nor extension method for 'DataSource' and 'DataBind', but all the examples I saw online make use of them. Where is the mistake?
问题是最后两行，Visual Studio 说它不包含“DataSource”和“DataBind”的定义或扩展方法，但我在网上看到的所有示例都使用了它们。错误在哪里？
采纳答案by cvraman
Change the xaml so that it looks like this :
更改 xaml 使其看起来像这样：
<ListView HorizontalAlignment="Center" Height="100" Margin="0,10,0,0"
VerticalAlignment="Top" Width="250" ItemsSource="{Binding dt}">
<ListView.View>
<GridView x:Name="GridView1">
<GridViewColumn DisplayMemberBinding= "{Binding Path=Name}"
Header="Vehicle Name" Width="100"/>
<GridViewColumn DisplayMemberBinding= "{Binding Path=Drive}"
Header="Vehicle Drive" Width="100"/>
</GridView>
</ListView.View>
</ListView>
Change your code behind :
更改后面的代码：
using System.Windows;
using System.Windows.Controls;
namespace SOWPF
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
var carViewModel = new CarViewModel();
carViewModel.LoadCars();
this.DataContext = carViewModel;
}
}
}
Add a View Model and instead of using a datatable, you are using an ObservableCollection.
添加一个视图模型，而不是使用数据表，您使用的是 ObservableCollection。
using System.Collections.ObjectModel;
using System.Data;
namespace SOWPF
{
public class CarViewModel
{
public ObservableCollection<Car> dt { get; set; }
public void LoadCars()
{
dt = new ObservableCollection<Car>();
Car ferrari = new Car("Ferrari", "Front-Wheel");
Car mercedes = new Car("Mercedes", "Rear-Wheel");
dt.Add(ferrari);
dt.Add(mercedes);
}
}
public class Car
{
public Car(string name, string drive)
{
Name = name;
Drive = drive;
}
public string Name { get; set; }
public string Drive { get; set; }
}
}
