Checkbox false hide textbox

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I know this is an easy question, but I have been out of the programming world for 3 years so please help!

If I have a checkbox on a WPF Page how do I hide a textbox if the checkbox is not ticked?

Thanks in advance

Posted 25-May-10 22:37pm

Suziem

Updated 25-May-10 22:43pm

Dalek Dave

v2

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2 solutions

Solution 1

Hey,

You can bind the Textbox's Visibility property to the CheckBox's Checked property and use a BooleanToVisibilityConverter to make the types match. That should do it.
Let me know if you need more clarity.

Posted 25-May-10 22:47pm

theminidriver

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Suziem 26-May-10 4:49am

Yes please how do I do this?

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theminidriver · Accepted Answer · 2010-05-25T23:03:00

Solution 2

Ok here is a sample window with what I think you are asking for. When you click the checkbox, the textblock becomes visible.

<Window x:Class="WpfFrontEnd.Window4"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window4" Height="300" Width="300">
<Window.Resources>

<BooleanToVisibilityConverter x:Key="boolToVisible"/>

</Window.Resources>
<Grid>

<StackPanel>
<CheckBox x:Name="CheckBox1"/>
<TextBlock Visibility="{Binding ElementName=CheckBox1, Path=IsChecked, Converter={StaticResource boolToVisible}}">Hello</TextBlock>
</StackPanel>

</Grid>
</Window>

Posted 25-May-10 23:03pm

theminidriver

Updated 25-May-10 23:07pm

v2

Comments

theminidriver 26-May-10 5:11am

Please note the revised version, for some reason the code got mangled on the first cut and paste.

Suziem 26-May-10 5:18am

Thanks a million!!

Suziem 26-May-10 7:12am

Me again: if you want to do this for a checkbox which is unchecked what command would you use?

theminidriver 26-May-10 10:41am

Do you mean show the textbox when the checkbox is Unchecked and vice-versa?
In that case , you will probably need to implement your own value converter, instead of using the provided BooleanToVisibilityConverter. Look up IValueConverter on MSDN documentation, If I remember correctly there is an example.

In any event it is quite easy to figure it out- just make a class which implements IValueConverter and fill in the method stubs. Then use your class instead of BooleanToVisibilityConverter as the Converter in the binding.

Hope that helps!