我需要使用带有Caliburn.Micro的WPF在DataGrid上显示对象字典的数据，每个对象都有自己的字典

Question

So I have a Dictionary<string, Language> which is a collection of languages each containing a BindableCollection<Translation> keyed by the language name. A Translation is just a data model containing a key and a value. It's basically a dictionary, but I needed to bind the keys and values to text box's. All the languages have the same list of keys. I would like to be able to bind the ItemsSource to my Dictionary<string, Language> and have it output something like the following.

Key       | English    | Spanish          | ...
______________________________________________
username  | Username   |Nombre de usuario | ...

The only way I have found to be able to do this is to put all my data into a DataTable, but I need to be able to edit and add and remove columns and rows. My code is becoming a mess trying to wire up custom event handling to keep my data and my DataGrid in sync and I need to figure out a better more manageable solution. Thanks for taking the time to help.

Answer 1

This does not look like something you can handle with a few line of code. Anyhow I would:

1. Create a Model with your Dictionary<string, Language>
2. Create a ViewModel with a List<TranslationsRow>

TranslationsRow would look like this:

class TranslationsRow
{
  public string Key;
  public string English;
  public string Spanish;
  public string German:
  // and so on...
}

3. Data bind you DataGrid to List<TranslationsRow>

You have to code by yourself the mappings between the Model ( Dictionary<string, Language> ) and the ViewModel ( List<TranslationsRow> ). (In SQL this would be a PIVOT / UNPIVOT operation).

I think this is a perfect example of a ViewModel "converting" the Model data on behalf of the View.

Answer 2

If I'm understanding correctly you have a dictionary which you want to bind to a TextBox while using the ShellViewModel of Caliburn Micro.

What I had to do in order to get the binding was set them all up in the code behind of the ShellView. So I have a text box on the Window name=tb1. In the constructor I coded:

InitializeComponent(); 
tb1.DataContext = ViewModels.ShellViewModel.myDictionary;

Then in the tb1 XAML I set the binding:

Text={Binding [myKey].myProperty, Mode=TwoWay}

I had to do this for each one. Name it\\Code behind\\Bind it for each textbox.