Datagrid ObservableCollection为一行wpf [英] Datagrid ObservableCollection for one row wpf

问题描述

我想用itemsource = {Binding Model}填充一个datagrid。
这不行。似乎datagrid不明白如何显示这些属性。

一个容易但愚蠢的解决方法工作得很好：

在viewmodel中：

  Props = new ObservableCollection< MonitoringBinaryModel>（）; 
 _Model = new MonitoringBinaryModel（name）; 
 Props.Add（_Model）; 
  

然后在xaml

  itemsource = {Binding Props} 
  

似乎愚蠢地创建一个可观察的集合，当它的唯一假设持有一个项目。有没有更好的方式来使任何类型的实例可观察？

解决方案

DataGrid旨在显示相同类型的对象的集合。收藏是必须的。如果您希望DataGrid显示您的模型的内容，您需要遵守前者的设计，可以使用ObservableCollection或实现一组接口，这样可以以收集方式检索您的viewmodel的属性。

我以前在Windows窗体时间里有一堆实现ITypedList接口的模型 - 这不是一个简单的练习说实话，所以如果我是你，我宁愿去方式：

• 将模型包装到任何集合中 - 正如您所述



• 用容器网格替换数据网格加上多个直接绑定，如下所示：

   < Grid> 
  < TextBlock Grid.Column =2Grid.Row =0Text =Prop1/> 
   ... 
  < TextBlock Grid.Column =2Grid.Row =1Text ={Binding Prop1}/> 
    

I want to populate a datagrid with itemsource={Binding Model}. This is not working out. It seems as the datagrid does not understand how to display these properties.

An easy but silly workaround works great:

In viewmodel:

Props= new ObservableCollection<MonitoringBinaryModel>();
_Model = new MonitoringBinaryModel(name);
Props.Add(_Model);

Then in xaml

itemsource={Binding Props}

Seems silly to create an observablecollection when its only suppose to hold one item. Is there a better way to make any type of instance observable?

解决方案

DataGrid is designed to display a collection of objects of same type. Collection is a must. If you want DataGrid to show a content of your model, you need to obey former's design, by either using ObservableCollection or implementing a bunch of interfaces which would allow your viewmodel's properties to be retrieved in 'collection way'.

I used to have a bunch of models implementing ITypedList interface back in Windows Forms time - it wasn't a simple exercise to say the truth, so if I were you I'd rather go for either way:

• Wrap model into any collection - exactly as you've stated

• Replace data grid with container grid plus a number of direct bindings, like this:

  <Grid>
      <TextBlock Grid.Column="2" Grid.Row="0" Text="Prop1"/>
  ...
      <TextBlock Grid.Column="2" Grid.Row="1" Text="{Binding Prop1}"/>
  

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