WPF Text block gray out text

Question

I want to gray out text in the WPF text block. how do i make it?

Regards Raju

Spondee

The question asks about text block, but the accepted answer is for TextBox. I'd edit the answer, but the web search for TextBlock brought me here and the other answers are what I was looking for... – Coadjutrix

Answer 1

On C#:

textBox.Foreground = Brushes.Gray;

On XAML:

<TextBox Foreground="Gray" />

To disable it (will change background too):

textBox.IsEnabled = false;

Bedchamber

Answer 2

TextBlocks do not grayout automaticly when disabled

you can use a style to do this for you

    <Style x:Key="DisableEnableTextBlock" TargetType="{x:Type TextBlock}">
    <Style.Triggers>
        <Trigger Property="IsEnabled" Value="True">
            <Setter Property="Opacity" Value="1" />
        </Trigger>
        <Trigger Property="IsEnabled" Value="False">
            <Setter Property="Opacity" Value=".5" />
        </Trigger>
    </Style.Triggers>
</Style>

Suppuration

Answer 3

The IsEnabled flag for a textblock does not grey the text. This post details the differences between textblock and label. It also shows the XAML to add a trigger on IsEnabled to grey the text.

Mashhad

Answer 4

You can set the TextBlock.Foreground property to any color (technically, any Brush). If you want it to be grayed out, just set:

<TextBlock Text="Foo" Foreground="Gray" />

If you want it to look "disabled", you can set IsEnabled to false:

<TextBlock Text="Foo" IsEnabled="false" />

Diseuse

I want to use IsEnabled flag. once i set it to false it doesn't have any effect. what could be the problem? – Spondee

@user209293: How did you set it to false? – Diseuse

The IsEnabled flag for a textblock does not grey the text. – Abshire

@Abshire This depends entirely on teh template being used, but yes, with the default one, the text is not greyed out. That's why I specifically mentioned setting hte foreground. – Diseuse

@Reed I meant that there is no "disabled" look for the textblock, of course unless you retemplate or style it. – Abshire

What if "Gray" isn't the disabled text color on that system? Shouldn't you be using a static resource brush that references a system color? – Rida

@Rida Depends on what the OP wants - "greyad out" suggests gray - if they want it to appear disabled, then definitely use a system color brush. – Diseuse

Right, but what if it's the wrong gray for the user's desktop theme? -- It would be weird if half of the controls on your form disabled to the proper shade of gray and the other half to some other arbitrary shade of gray that happened to match the developer's color scheme. -- You should really be referring to the System Colors when you're trying to match them (which is clearly the intention here). – Rida

If you want to TextBlocks to grayout when disabled you need to use a style <Style x:Key="DisableEnableTextBlock" TargetType="{x:Type TextBlock}"> <Style.Triggers> <Trigger Property="IsEnabled" Value="True"> <Setter Property="Opacity" Value="1" /> </Trigger> <Trigger Property="IsEnabled" Value="False"> <Setter Property="Opacity" Value=".5" /> </Trigger> </Style.Triggers> </Style> – Suppuration

Answer 5

The trouble with using the TextBox is that there's a box round it. If you use Label (with Content="Foo") then you can toggle the text colour with IsEnabled. Otherwise it behaves like TextBlock for a short heading/label.

Heisel

Answer 6

For WinUI set the Opacity property to something around 0.5.

Jalisajalisco

Answer 7

Use TextBox instead and set IsReadOnly = true or IsEnabled = false

Ranitta