wpf 绑定到字符串

发布于 2024-11-27 22:49:18 字数 769 浏览 1 评论 0原文

我有一个带有 Dim _characters = New ObservableCollection(of String)
的 Movie 类 Characters 是要获取和设置的关联属性，

我如何使用 Binding 使字符显示在列表框中？
到目前为止，我有以下内容，这不起作用，因为我不知道该用什么来代替 ToString。

<ListBox Name="cList" ItemsSource="{Binding Characters}">

 <ItemsControl >
   <ItemsControl.ItemTemplate >
    <DataTemplate >
     <TextBox Text="{Binding ToString}"/>  
    </DataTemplate> 
   </ItemsControl.ItemTemplate> 
 </ItemsControl>

 </ListBox>

我希望它们是可编辑的，因此是一个文本框。

我尝试直接将 Characters 绑定到 TextBox，即使这样也不起作用。

编辑：在代码中我有 parentGrid1.DataContext = me.movies 其中
父网格保存电影。

原文

I have a Movie class with a Dim _characters = New ObservableCollection(of String)
Characters is the associated property to get and set

How can i get characters to show up in the listBox using Binding?
So far i have the following, this isn't working as i don't know what to put instead of ToString.

<ListBox Name="cList" ItemsSource="{Binding Characters}">

 <ItemsControl >
   <ItemsControl.ItemTemplate >
    <DataTemplate >
     <TextBox Text="{Binding ToString}"/>  
    </DataTemplate> 
   </ItemsControl.ItemTemplate> 
 </ItemsControl>

 </ListBox>

I want them to be editable, hence a textbox.

i tried to bind Characters to TextBox directly, even that didn't work.

Edit :
in the code i have parentGrid1.DataContext = me.movies where
parent grid holds movies.

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谁许谁一生繁华 2024-12-04 22:49:18

对于那些遇到异常的人

...绑定需要路径或xpath ...

您可以通过这种方式直接绑定对象：

<Label Content="{Binding .}" />

For those who are experiencing the exception

... binding requires path or xpath ...

You can bind the object directly this way:

<Label Content="{Binding .}" />

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梦开始←不甜 2024-12-04 22:49:18

将您的 TextBox 绑定更改为以下内容。我认为它应该有效：

<TextBox Text="{Binding}"/>

这会加载项目本身而不是属性或方法输出。由于该项目是一个字符串，因此它应该绑定到字符串值。

Change your TextBox binding to the following. I think it should work:

<TextBox Text="{Binding}"/>

This loads the item itself instead of a property or method output. Since the item is a string it should bind to the strings value.

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渡你暖光 2024-12-04 22:49:18

您无法对 ObservableCollection 执行双向绑定。为了使字符串可编辑，您必须创建一个具有字符串 get/set 属性的类，如以下类 Foo：

public class Foo
{
    string _text;

    public Foo(string text)
    {
        _text = text;
    }
    public string Text 
    {
        get { return _text; }
        set { _text = value; }
    }
}

您的 Characters 类型应为 ObservableCollection 并且您的 XAML 应该更改，以便文本框绑定到 Foo.Text：

<ListBox ItemsSource="{Binding Characters}" >
    <ListBox.ItemTemplate >
        <DataTemplate >
            <TextBox Text="{Binding Text}"/>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

You cannot perform two-way binding to ObservableCollection<string>. In order to make the strings editable you have to create a class with a string get/set property as the following class Foo:

public class Foo
{
    string _text;

    public Foo(string text)
    {
        _text = text;
    }
    public string Text 
    {
        get { return _text; }
        set { _text = value; }
    }
}

Your Characters should then be of type ObservableCollection<Foo> and your XAML should be changed so that the textboxes are binding to Foo.Text:

<ListBox ItemsSource="{Binding Characters}" >
    <ListBox.ItemTemplate >
        <DataTemplate >
            <TextBox Text="{Binding Text}"/>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

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