在XAML中将BindingBase属性设置为Binding

Question

I have a BindingBase property in the code-behind:

public BindingBase MyBinding { get; set; }

In the code-behind, I can set the binding on a DependencyProperty this way:

myTextBlock.SetBinding(TextBlock.TextProperty, MyBinding);

Is there any way to define it in XAML?

I tried this, but it is not working:

<TextBlock Text="{Binding MyBinding}" />

as it tries to create a new binding to the MyBinding property.

Answer 1

Your Source and Target should be of same type, or better use a Convertor .

TextBlock.Text is string, and you are binding it to a Binding type. So, ToString() would be called.

And if you want to mimic what you have done in your code-behind, then you have to create a separate class eg public class CustomBinding : BindingBase .

And use it like this :

<TextBlock>
    <TextBlock.Text>
        <local:CustomBinding>
            ...
        </local:CustomBinding>
    </TextBlock.Text>
</TextBlock>