Question

.NET/C#/WPF noob here. I’m trying to give a textbox a border based on a variable I can bind to (variable stores results of validation). My first attempt looked like this:

<Border ... Visibility="{Binding ServerName.IsValid, Converter={StaticResource BoolToVisibility}}">
    <TextBox ... />
</Border>

But this had the undesired side effect of hiding the textbox within it when visibility was hidden. After that I looked at DataTriggers, but it didn’t seem like what I needed. Any ideas on how I can bind the border to that variable?

Thanks!

Answer 1

You can layer it:

<Grid>
    <Border ... /> <!-- Bind as before -->
    <TextBox Margin="5"/> <!-- Margin to not completely hide border below -->
</Grid>

(You can also overlay the border by switching the order if that is preferable)

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You could use a DataTrigger as well but you would need to change the appearance rather than hiding it completely.