Question

I wanna make a databinding in a custom class.
But it seems different from normal databinding.

For example, I have a custom class DisplayInfo with a properties DisplayText(string), DisplayStyle(string) and DisplayDescription(string).

and in another custom class ViewUI that contains a property DisplayData which is of type DisplayInfo.

for example:

public class ViewUI 
{
    ....
    public DisplayInfo DisplayData { get; set; }
    ....
}

I want to do DataBinding of the DisplayText in the Xaml. How could I do so?

reference:

<Page ......>

.....
.....
.....

    <ViewUI .......>

        <ViewUI.DisplayData>
            <DisplayInfo Description="Description 123456...." DisplayStyle="Style123" DisplayText = "{Binding.....}"/> <!-- (How to do databinding here or in other place?) -->
        </ViewUI.DisplayData>


    </ViewUI>

</Page>

Answer 1

You have to change properties in custom class to dependency properties. If property of your class is dependency property then you are able to bind it in xaml.

For more info about dependency property visit http://msdn.microsoft.com/en-us/library/ms753358.aspx

What Is a Dependency Property?

---

You can enable what would otherwise be a common language runtime
(CLR) property to support styling, data binding, inheritance,
animations, and default values by implementing it as a dependency
property. Dependency properties are properties that are registered
with the WPF property system by calling the Register method (or
RegisterReadOnly), and that are backed by a DependencyProperty
identifier field. Dependency properties can be used only by
DependencyObject types, but DependencyObject is quite high in the WPF
class hierarchy, so the majority of classes available in WPF can
support dependency properties. For more information about dependency
properties and some of the terminology and conventions used for
describing them in this SDK, see Dependency Properties Overview.