MVVM 数据网格绑定 [英] MVVM datagrid binding

问题描述

我正在为我的项目使用 MVVM，并且我正在尝试将我的数据库中的表与 DataGrid 绑定.但是当我运行我的应用程序时，数据网格是空的.

I'm using MVVM for my project and I'm trying to bind a table from my database with a DataGrid. But when I run my application datagrid is empty.

MainWindow.xaml.cs:

 public MainWindow(){
        InitializeComponent(); 
        DataContext = new LecturerListViewModel()
    }

MainWindow.xaml:

 <DataGrid AutoGenerateColumns="False" ItemsSource="{Binding Source=Lecturers}" >
            <DataGrid.Columns>
                <DataGridTextColumn Header="Name" Binding="{Binding Name}"/>
                <DataGridTextColumn Header="Surname" Binding="{Binding Surname}"/>
                <DataGridTextColumn Header="Phone" Binding="{Binding Phone_Number}" />
            </DataGrid.Columns>
 </DataGrid>

LecturerListViewModel.cs:

public class LecturerListViewModel : ViewModelBase<LecturerListViewModel> 
{

    public ObservableCollection<Lecturer> Lecturers;
    private readonly DataAccess _dataAccess = new DataAccess();

    public LecturerListViewModel()
    {
        Lecturers = GetAllLecturers();
    }

和 ViewModelBase 实现 INotifyPropertyChanged.

and ViewModelBase implements INotifyPropertyChanged.

Lecturer.cs

public class Lecturer
{
    public Lecturer(){}

    public int Id_Lecturer { get; set; }
    public string Name { get; set; }
    public string Surname { get; set; }
    public string Phone_Number { get; set; }

我做错了什么?我用调试器检查了它，DataContext 包含所有讲师，但没有显示在数据网格中.

What did I do wrong? I checked it with debuger and DataContext contains all lecturers, but ther aren't shown in datagrid.

推荐答案

您在绑定时出错.试试这个:

You have an error in binding. Try this:

<DataGrid AutoGenerateColumns="False" ItemsSource="{Binding Lecturers}" >

代码隐藏:

private ObservableCollection<Lecturer> _lecturers = new ObservableCollection<Lecturer>();
public ObservableCollection<Lecturer> Lecturers
{
   get { return _lecturers; }
   set { _lecturers = value; }
}

这里是简单的示例代码 (LecturerSimpleBinding.zip).

Here is simple example code (LecturerSimpleBinding.zip).

这篇关于MVVM 数据网格绑定的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！