我正在尝试使用 MVVM。我创建了一个具有 3 个属性(ModelClass)的模型,在我的 View 模型中,我有一个可观察的 ModelClasses 集合。在 View 中,我将一个列表绑定(bind)到我的 VM 中的可观察集合。该列表是 3 个文本框的模板。
如何将文本框绑定(bind)到模型中的特定属性?
假设模型类名为 Person 并具有姓名、年龄和国家作为属性, View 模型具有人员集合, View 具有绑定(bind)到人员列表 (itemssource..) 的列表。我不知道如何在列表中创建一个与人物模型的姓名、年龄和国家/地区绑定(bind)的文本框。
最佳答案
根据您的查询,我构建了示例应用程序,它非常适合我。详细信息如下。
PersonViewModel.cs
internal class PersonViewModel{
public ObservableCollection<PersonModel> PersonCollection { get; set; }
public PersonViewModel()
{
//This data will load as the default person from the model attached to the view
PersonCollection = new ObservableCollection<PersonModel>();
PersonCollection.Add(new PersonModel { Name = "John", Age= 24, Country = "Canada"});
PersonCollection.Add(new PersonModel { Name = "David", Age = 25, Country = "United States"});
PersonCollection.Add(new PersonModel { Name = "Prajin", Age = 28, Country = "Japan"});
}
}
PersonView.xaml
<Window x:Class="MVVM.PersonView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MVVM Demostration" Height="297" Width="480"
xmlns:local="clr-namespace:MVVM.ViewModel">
<Window.DataContext>
<local:PersonViewModel />
</Window.DataContext>
<Grid Margin="10">
<ListBox ItemsSource="{Binding PersonCollection}">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Path=Name}" Margin="5" Grid.Column="0" FontSize="14" />
<TextBlock Text="{Binding Path=Age}" Margin="5" Grid.Column="1" FontSize="14" />
<TextBlock Text="{Binding Path=Country}" Margin="5" Grid.Column="2" FontSize="14"/>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
个人.cs
internal class PersonModel : System.ComponentModel.INotifyPropertyChanged
{
private string name;
public string Name
{
get { return name; }
set
{
name = value;
OnPropertyChanged("Name");
}
}
private int age;
public int Age
{
get { return age; }
set
{
age = value;
OnPropertyChanged("Age");
}
}
private string country;
public string Country
{
get { return country; }
set
{
country = value;
OnPropertyChanged("Country");
}
}
#region INotifyPropertyChanged Members
public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
PropertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
}
#endregion
}
关于wpf mvvm 绑定(bind) View 到模型,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6722361/