C# passing dependency properties in an attribute

Question

I am creating a self composing UserControl in WPF.

I have an attribute I adorn the properties of my entity with that instructs my SelfComposingUserControl what to do.

If I want a property to be edited by a specific UI Control I pass this in my attribute.

In my attribute, I'm really not sure how to pass which property on the UI Control I would like bound to my entity property.

Can anybody help?

Here is a stripped down version of my UIEditableAttribute:

public class UIEditableAttribute : Attribute
{
    /// <summary>
    /// UIControl to edit the property
    /// </summary>
    public Type UIControl { get; set; }

    /// <summary>
    /// UIControl dependency property that binds to the property
    /// </summary>
    public DependencyProperty UIControlValueProperty { get; set; }
}

And here is an example of a property using the attribute

    private int _numberOfRows;
    [UIEditable(DisplayGroup = "B", UIControl = typeof(RadNumericUpDown), UIControlValueProperty = RadNumericUpDown.ValueProperty)]
    public int NumberOfRows
    {
        get { return _numberOfRows; }
        set { CheckPropertyChanged(ref _numberOfRows, value); }
    }

In the SelfComposingUserControl, I have got around this by using a switch statement on the type of UIControl that binds the property to the correct dependency property. I would however like to specify at the property level.

Many thanks in advance.

This sounds very like the functionality implemented by the PropertyGrid control in the XCeed Extended WPF Toolkit, to define Custom Editors. Look at [the description](https://github.com/xceedsoftware/wpftoolkit/wiki/PropertyGrid) after the header "Custom Editors with Attributes". Their solution is to mandate that the editors implement an interface ITypeEditor. — Phil Jollans, Aug 09 '19 at 20:47

score 0 · Accepted Answer · answered Aug 13 '19 at 14:11

0

The answer is to pass the UIControlValueProperty as a string i.e. "ValueProperty" in the attribute, then get this useful function;

Get Dependency Property By Name

to get the dependency property from the type or object.

answered Aug 13 '19 at 14:11

Lance

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C# passing dependency properties in an attribute

1 Answers1