C# WPF Textblock different font color per line

Question

I am trying to make each line of text on a WPF textblock display in a different color. I have the following code which makes the entire block's font color purple because that's the last color it's set to. How can I make it so each potion is displayed in a different color?

    private void btnShowPotions_Click(object sender, RoutedEventArgs e) {

        tbPotionInfo.Foreground = Brushes.Green;
        tbPotionInfo.Text = smallPotion.Name + "(" + smallPotion.AffectValue + ")\r\n";
        tbPotionInfo.Foreground = Brushes.Blue;
        tbPotionInfo.Text += mediumPotion.Name + "(" + mediumPotion.AffectValue + ")\r\n";
        tbPotionInfo.Foreground = Brushes.Red;
        tbPotionInfo.Text += largePotion.Name + "(" + largePotion.AffectValue + ")\r\n";
        tbPotionInfo.Foreground = Brushes.Purple;
        tbPotionInfo.Text += extremePotion.Name + "(" + extremePotion.AffectValue + ")\r\n";
    }

Take a look at this wpf-tutorial.com/basic-controls/… - specifically the section named RUN and SPAN. — Marek M.
– Marek M., Commented Mar 4, 2016 at 6:59
use richtextbox and set it to readonly , or you have to setup textblock with one textbox for each color — Thorarins
– Thorarins, Commented Mar 4, 2016 at 7:00
@Thorarins you're wrong - with the usage of Runs or Spans he will be working with one TextBlock only. Besides - RichTextBox is reaaaaally slow and laggy. Have you actually tried to use it in your apps? — Marek M.
– Marek M., Commented Mar 4, 2016 at 7:02

Gopichandar · Accepted Answer · 2016-03-04 07:06:34Z

9

You can make use of Run.

Here is the sample of how to use the Run

Run run = new Run(smallPotion.Name + "(" + smallPotion.AffectValue + ")\r\n");
run.Foreground = Brushes.Green;
tbPotionInfo.Inlines.Add(run);   

run = new Run(mediumPotion.Name + "(" + mediumPotion.AffectValue + ")\r\n");
run.Foreground = Brushes.Blue;
tbPotionInfo.Inlines.Add(run);        
...

Haven't verified but I hope it will help you.

answered Mar 4, 2016 at 7:06

Gopichandar

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Thorarins · Accepted Answer · 2016-03-04 07:07:55Z

4

Use textblock like this

<TextBlock>
      <TextBlock Name="tbSmallPotion" Foreground="Green"/
      <TextBlock Text="tbMediumPotion"Foreground="Blue"/>
 </TextBlock>

and set the values

tbSmallPotion.Text = smallPotion.Name + "(" + smallPotion.AffectValue + ")\r\n";
tbMediumPotion.Text = mediumPotion.Name + "(" + mediumPotion.AffectValue + ")\r\n";

answered Mar 4, 2016 at 7:07

Thorarins

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1 Comment

kalenpw Over a year ago

Yes this would work, I ended up going with Gopichandar's solution for the simplicity of having one textblock.

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