CODEWITHSUNDEEP
c#wpfwpfdatagrid
Jeysym
Jeysym

Reputation: 186

WPF - DataGrid bind column to method instead of property

I have a class that represents a vertex, which can have multiple attributes. Each attribute is identified by its name.

public class Vertex
{
    private Dictionary<string, Attr> attributes;

    public Attr GetAttributeByName(string attributeName)
    {
        Attr attribute;
        if (attributes.TryGetValue(attributeName, out attribute))
        {
            return attribute;
        }

        return null;
    }
}

I want to have a DataGrid that will have its ItemsSource bound to some ObservableCollection<Vertex>. Each column should represent one attribute of the vertex. And I want to control the columns at runtime (adding new columns or removing old ones). But I am not able to do that, because new column binding wants the name of property that it will get the cell data from. But I need the binding to call method GetAttributeByName() with the name of the attribute to get the data, rather than just getting a property. 

string newAttributeName = "some_name";
DataGridTextColumn newColumn = new DataGridTextColumn();
newColumn.Header = newAttributeName;
newColumn.Binding = ???;

dataGrid.Columns.Add(newColumn);

Is there some way to do it?

Upvotes: 1

Views: 1011

Answers (1)

mm8
mm8

Reputation: 169190

Is there some way to do it?

No, you can't really bind to methods like this.

But if you expose the Dictionary<string, Attr> as a public property of the Vertex class, you should be able to bind to this one:

string newAttributeName = "some_name";
DataGridTextColumn newColumn = new DataGridTextColumn();
newColumn.Header = newAttributeName;
newColumn.Binding = new Binding($"Attributes[{newAttributeName}]");

Upvotes: 3

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