C#•3mo ago

Binding Dictionary to DataGrid (WPF)

I have multiple lists of objects of the same type that contain a dictionary property and I want to bind a datagrid column header to the key, and the cell values to the dictionary's value. Example of the object:

public class MyObject
{
    public Dictionary<string, string> Data { get; } // key would be a column header, value would be cell value
}

Now, in each list, the keys themselves will remain the same for each object's dictionary, but could change between lists, so I can't have static column headers. There is no editing in the grid, although I am gonna allow the hiding of columns and filtering. Not sure the best way to go about this. If it was static keys I could just create an object to represent the data in the dictionary and make an observable collection of that.

2 Replies

lycian•3mo ago

I don't know of a clever way to bind this other than just to have

AutoGenerateHeaders="false" attachedBehaviors:DataGridColumnsBehavior.BindableColumns=
                              "{Binding ColumnDefinitions}"

AutoGenerateHeaders="false" attachedBehaviors:DataGridColumnsBehavior.BindableColumns=
                              "{Binding ColumnDefinitions}"

and

c#
public ObservableCollection<DataGridColumn> ColumnDefinitions { get; } = new();

c#
public ObservableCollection<DataGridColumn> ColumnDefinitions { get; } = new();

then fill in with

c#
foreach (var key in Data.Keys) 
{
  ColumnDefinitions.Add(/*whatever kind of column*/);
}

c#
foreach (var key in Data.Keys) 
{
  ColumnDefinitions.Add(/*whatever kind of column*/);
}

Nacho Man Randy Cabbage•3mo ago

Thanks! yeah that's pretty much what I ended up doing. works fine 🙂

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Binding Dictionary to DataGrid (WPF)