CODEWITHSUNDEEP
c#wpfdata-bindinghyperlink
mcalex
mcalex

Reputation: 6778

Hyperlink - content binding

I have a TextBox where a user inputs a uri. This then becomes the NavigateUri property of a hyperlink, allowing the user to click on the link to open the page.

<!-- Input TextBox -->
<TextBox x:Name="linkBox" Width="175" Text="{Binding Path=DocRef, Mode=TwoWay}" />

<!-- Hyperlink -->
<TextBlock>
    <Hyperlink DataContext="{Binding ElementName=linkBox}" NavigateUri="{Binding 
               Path=Text}" RequestNavigate="Hyperlink_RequestNavigate">
        <TextBlock DataContext="{Binding ElementName=linkBox}" 
                   Text="{Binding Path=Text}" />
    </Hyperlink>
</TextBlock>

This works for inputting the whole (absolute) uri in the TextBox. However, the user wants to only input the 'document.extn' bit of the Uri, and have the application prepend the rest of the resource (ie, the 'http://www.example.com/' bit). How do I set the base part of the uri and append the document reference (preferably in xaml)? I came across Hyperlink's BaseUri property which sounds perfect, but unfortunately is protected, so this doesn't work:

<Hyperlink DataContext="{Binding ElementName=linkBox}" 
           BaseUri="http://www.example.com/" NavigateUri="{Binding Path=Text}" 
           RequestNavigate="Hyperlink_RequestNavigate">

Can anybody assist?

Upvotes: 1

Views: 996

Answers (2)

sa_ddam213
sa_ddam213

Reputation: 43596

You may be able to use MultiBinding to join the 2 strings you need

<Hyperlink DataContext="{Binding ElementName=linkBox}"  RequestNavigate="Hyperlink_RequestNavigate">
    <Hyperlink.NavigateUri>
       <MultiBinding StringFormat="{}{0}{1}">
           <Binding FallbackValue="http://www.example.com/" />
           <Binding Path="Text" />
        </MultiBinding>
    </Hyperlink.NavigateUri>
</Hyperlink>

Upvotes: 2

Prash
Prash

Reputation: 1122

You can create a Custom Converter using IValueConverter interface to get the base uri appended uri.

Upvotes: 0

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