How to use style for GroupBox header?

c# wpf combobox styles

29,115

Solution 1

Did you try the following?

<Style TargetType="GroupBox">
    <Setter Property="BorderBrush" Value="{StaticResource lightBlueBrush}"/>
    <Setter Property="Margin" Value="25,1,5,5"/>
    <Setter Property="HeaderTemplate">
        <Setter.Value>
            <DataTemplate>
                <TextBlock Text="{Binding}" FontWeight="Bold"/>
            </DataTemplate>
        </Setter.Value>
    </Setter>
</Style>

Usage:

<GroupBox Header="Title" />

Solution 2

A groupboxs headerTemplate is a type of DataTemplate. so you should provide a datatemplate object insteed of style or template.

try below one.

   <Window.Resources>

        <DataTemplate x:Key="DataTemplate1">
            <TextBlock Text="Test Templated Header"/>
        </DataTemplate>

    </Window.Resources>
    <Grid>
        <GroupBox  Header="Test Header" HeaderTemplate="{StaticResource DataTemplate1}">
            <Border BorderBrush="Red" Margin="10">
                <TextBlock Text="Hello"/>
            </Border>
        </GroupBox>
    </Grid>

29,115

Author by

Hossein Narimani Rad

Ph.D. Student in Geospatial Information Systems (GIS). LinkedIn GitHub

Updated on July 08, 2020

Comments

Hossein Narimani Rad almost 4 years
I have lost of GroupBox in my form that their header text must be Bold. I know how to do it for a single GroupBox:
```
<GroupBox>
     <GroupBox.Header>
         <TextBlock Text="HEADER TEXT" FontWeight="Bold"/>
     </GroupBox.Header>
</GroupBox> 
```
But I'm interested to know how to do it with Styles. Here is what I have tried:
```
<Style TargetType="GroupBox">
    <Setter Property="BorderBrush" Value="{StaticResource lightBlueBrush}"/>
    <Setter Property="Margin" Value="25,1,5,5"/>
    //<Setter ??
</Style>
```
I have tried <Setter Property="HeaderTemplate" Value={StaticResource myTemp}> Which myTemp is a simple DataTemplate But VS suddenly closed! I'm not sure if I'm in the correct way of doing it, so anyone could help me?

EDIT: Please test your idea before posting it as an answer!
Hossein Narimani Rad about 11 years

Yes, I tried something like this, But the designer throws exception
Hossein Narimani Rad about 11 years

So the GroupBox's header would be "Test Header" or "Test Templated Header"
DHN about 11 years

Did you try what I posted? And what kind of exception is the designer throwing?
Hossein Narimani Rad about 11 years

If you have some GroupBox with different Headers what will happen?
Hossein Narimani Rad about 11 years

Did you changed your solution? I tried it and this time it works. Thank you.
DHN about 11 years

No I didn't. But I'm glad I could help.
JSJ about 11 years

are you using any sort of binding in your datatemplate. if so please make it dynamicresource insteed of StaticResource.
DHN about 11 years

-1 Sorry, but it's simply wrong, what you're suggesting. I don't see, how DynamicResource could help here. You're whole post is kind of misleading.
JSJ about 11 years

yes you are right it will not useful as we are using direct property values. as FontWeight="Bold" thanks for the cut.
l33t over 8 years

This breaks HeaderStringFormat functionality.
Grault over 8 years

The accelerator (shortcut) key seems to be fixed by using a Label instead of a TextBlock.
user1151923 over 8 years

I just changed TextBlock to Label and it worked. I had to set Height="15" for the label though because otherwise the GroupBox's contents would look weirdo.
DHN over 7 years

@HristoYankov: Uhm, why?