Question

Is there any way I can make a WPF TextBox dynamically grow beyond the bounds of its parent?

For example, I am allowing a user to type in an XPath string that could be very long (wide), I would like one of two possible things to happen:

1. The textbox could grow wider when the user types a certain amount of characters.
   or
2. When the user initially clicks on the textbox, it kind of ‘pops-out’ and is very wide, wider than its container.

Is this possible?

Answer 1

You can set a negative Margin to allow it to grow wider than its parent.

<Grid>
    <Grid Margin="50">
        <TextBlock Margin="0,0,-50,0" Text="This is a very long text." />
    </Grid>
</Grid>