Is there a way to have \n make a line break in a TextBlock?
<TextBlock Text="line1\nLine2" />
Or is there a better way to force a middle line break, inside the Text attribute?
<LineBreak />
This doesn't work for me, it needs to be the value of the Text attribute, because the text string is being set from an outside source.
I'm familiar with LineBreak but it's not the answer I'm looking for.
Try this:
<TextBlock>
line1
<LineBreak />
line2
</TextBlock>
I know this is ressurecting an old question, but I had the same problem. The solution for me was to use HTML encoded line feeds ( ).
Line1 Line2
Looks like
Line1
Line2
For more of the HTML encoded characters check out w3schools
The easiest way is
<TextBlock> blabla <LineBreak /> coucou <LineBreak /> coucou 2 </TextBlock>
So you just write XAML code, and the <LineBreak /> has exactly the same meaning the in HTML or the "\n" in C#.
<LineBreak/>
http://www.longhorncorner.com/UploadFile/mahesh/XamlLineBreak06092005152257PM/XamlLineBreak.aspx
How about breaking the line into two tags?
<StackPanel>
<TextBlock Text="Line1" />
<TextBlock Text="Line2" />
</StackPanel>
<LineBreak/> will not work if it is inside a collection such as Grid or StackPanel.
In such cases the following would work as shown:
Correct way to use it may be the following :
<TextBlock>
<Span>text1</Span>
<LineBreak/>
<Span>text2</Span>
</TextBlock>
The Best way that worked for me for multiple lines in the same Textblock is:
<TextBlock>
text1
<LineBreak/>
text2
</TextBlock>
Make sure to not use TextWrapping="Wrap". Use TextWrapping="NoWrap" or use nothing.
<HyperlinkButton
Content="Apply and restart this pplication!
Note that modifying these settings requires the application to be restarted." />
CRLF simple way = !
!
- Work on all wpf, xaml, silverlight controls like TextBlock, HyperlinkText and more
If you are binding TextBlock's Text, none of the other answers work. Simply add '\n' to the binding text to where you want to break.
this did not work for me, when I used binding. But this works:
$"first line {Environment.NewLine} second line"
I'm late to the party but ..
this is more or less how I did it ,(mind my ItemSources are plain strings, not formatted , and I didn't need to 'convertBack' anything)
public class SpaceToLineBreakConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
return (!String.IsNullOrEmpty(value as string))
? new Regex(#"\s").Replace(value as string, "\n")
: value;
}
public object ConvertBack(object value, Type targetType, object parameter,System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
This also works fine:
<TextBlock>
<Run Text="My nice text"/>
<LineBreak/>
<LineBreak/>
<Run Text="After some linebreaks, I'm back!"/>
</TextBlock>
I was having a similar problem and wanted to bind a String of xaml markup to a TextBlock. Essentialy storing the declarative markup inside a TextBlock in a string for later use.
This is how I did: I subclassed the TextBlock to make the InlineCollection bindable and wrote a Converter between the string and an InlineCollection(or actually a generic list of Inlines.)
just use the AccessText control. you can use it like a label and you have the property TextWrapping="WrapWithOverflow"
eg.
Mine is like that and it's working fine. Also, you don't have any problems on changing the text dinamically.
This also works fine.
Using this method we can modify the text properties in each line as we required.
<TextBlock>
<StackPanel>
<TextBlock FontSize="12" FontWeight="Bold" >My Text One</TextBlock>
<TextBlock FontFamily="Times New Roman" FontStyle="Italic">
- My Text Two
</TextBlock>
</StackPanel>
</TextBlock>
Related
I would like to be able to change the weight of text (e.g. change from Normal to Bold and back again) within the Text property string of a TextBlock (presumably using some control character set). Is this even possible?
TextBLock.Text creates a single Run, you set custom Inlines instead:
<TextBlock>
Text with <Bold>bold</Bold> within.
<TextBlock>
Obviously it no longer uses the Text property.
Are you talking about something like this?
<TextBlock>
<Run Text="Hey it's Normal Text"/>
<Run Text="Hey it's Bold Text" FontWeight="Bold"/>
<Run Text="Hey it's Colored Text" Foreground="Green"/>
</TextBlock>
I would bind a string property to text property like this: Text="{Binding propertyName}.
I also want to append a hardcoded string to this like Text="{Binding propertyName} appendedName. How to do this?
Text="{Binding propertyName,StringFormat='Your property is: {}{0}'}"
You could use Run Text:
<TextBlock>
<Run Text="{Binding YourBinding}"/>
<Run Text="Suffix"/>
</TextBlock>
If you want to use it like this several times I would recommend a TemplatedControl where you have a Suffix DependencyProperty and a Text DependencyProperty.
You should create new property that returns text + appendedName.
Another way is to use several text blocks.
When would I use the Text attribute of the <TextBlock> and when should I put my text in the content of the <TextBlock>?
<TextBlock Text="Example Text" />
vs.
<TextBlock>Example Text</TextBlock>
The former can be bound, whilst the latter is particularly useful when combining Runs:
<TextBlock Text="{Binding SomeProperty}"/>
<TextBlock>
<Run>You have </Run>
<Run Text="{Binding Count}"/>
<Run>items.</Run>
</TextBlock>
The use of the Text property has become common as a result of previous versions of the Xaml parser but the placing the text as content is more natural especially if you have a background in HTML.
The fact the many TextBlocks either have simple short chunks of literal text in or are bound. Would tip the balance IMO to using the Text property. In addition any globalisation that may come along latter may end with those literals being replaced by bindings as well.
I have a TextBlock binding as follows in my ControlTemplate.
<TextBlock Grid.Column="1" VerticalAlignment="Center"
FontSize="16" FontFamily="Arial" FontWeight="Bold"
Text="{Binding RelativeSource={RelativeSource TemplatedParent},Path=ButtonText}">
</TextBlock>
When I set ButtonText as follows with , it doesn't work. It doesn't display in separate line.
ButtonText="Change<LineBreak/> Casette"
How to fix this? Appreciate your help, please provide me with sample code.
A TextBlock displays the contents of its Inlines property. The Text property exists only as a convenience (though it's a significant one): if you set the Text property, the TextBlock will create a Run, set its content to the string you've provided, and save it in the Inlines collection.
When you set the content of a TextBlock element in XAML, the XamlReader populates the Inlines collection directly rather than through the Text property. It parses text nodes into Run objects, and elements as usual for XAML. So this:
<TextBlock>
Line1<LineBreak/>Line2
</TextBlock>
is treated as though it were actually this:
<TextBlock>
<Run>Line1</Run>
<LineBreak/>
<Run>Line2</Run>
</TextBlock>
Note, by the way, that if you try to set the Text property explicitly:
<TextBlock>
<TextBlock.Text>
Line1<LineBreak/>Line2
</TextBlock.Text>
</TextBlock>
you'll get an exception, because the XamlReader will try to create a LineBreak object, and the Text property can only contain a string.
Your binding isn't working the way you want it to because it's explicitly setting the Text property to a string. This doesn't get parsed as XAML (and good thing, too). And so what's displaying in the TextBlock is the content of that string.
So there are basically two ways to accomplish what you're trying to accomplish. In your case, you probably can just get away with embedding a newline into the string.
But this is trickier than it looks if you're doing it from XAML. Because XAML is XML, and XML does some funny things to whitespace. You're OK if you set it explicitly in an attribute using XML character entities, e.g.:
<TextBlock Text="Line 1
Line 2"/>
But that won't work if you do it this way:
<TextBlock>
<TextBlock.Text>
Line 1
Line 2
</TextBlock.Text>
</TextBlock>
because the XML parser normalizes whitespace in element content. That CR/LF pair gets turned into a single space, and that's what gets into the text property.
If you're using binding, you don't need to worry about any of this XML stuff (unless you're binding to the contents of an XML document!). You can just put \r\n into the property value.
The other way to do this is to directly populate the TextBlock's Inlines property. But you can't do this via binding, since Inlines isn't a dependency property - in fact, it's read-only, and you can only populate it by calling its Add or AddRange methods.
I used this code to obtain what you want. This is the XAML:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="1" VerticalAlignment="Center"
FontSize="16" FontFamily="Arial" FontWeight="Bold"
Text="{Binding Path=ButtonText}">
</TextBlock>
</Grid>
and this is the code behind. To make the example simplier, I don't create a ViewModel class:
public Window1()
{
InitializeComponent();
DataContext = this;
ButtonText = "Change\r\nCasette";
}
public string ButtonText
{
get { return (string)GetValue(ButtonTextProperty); }
set { SetValue(ButtonTextProperty, value); }
}
// Using a DependencyProperty as the backing store for ButtonText. This enables animation, styling, binding, etc...
public static readonly DependencyProperty ButtonTextProperty =
DependencyProperty.Register("ButtonText", typeof(string), typeof(Window1), new UIPropertyMetadata(""));
I'd like an advice to the following problem: I want to embed a Button into a text flow, but when I embed a Button and Label (or TextBlock) into the WrapPanel, I get the first figure:
alt text http://sklad.tomaskafka.com/files/wpf-wrappanel-problem.png
I think that one of solutions could be FlowDocument, but I feel that this is far too heavy for a control simple like this (which could be used in several hundred instances). Do you have some other ideas about how to implement this? Thank you!
EDIT:
One solution could be the following (I didn't know it was possible to put more stuff into TextBlock), but I would lose the ability to bind (which I need):
<TextBlock TextWrapping="Wrap">
<Span>
<Button x:Name="MyButton" Command="{Binding Path=MyCommand}" Content="+" />
<Run x:Name="MyLabel" Text="{Binding Path=Subject}" />
<!--
Problem: binding makes following error:
A 'Binding' cannot be set on the 'Text' property of type 'Run'.
A 'Binding' can only be set on a DependencyProperty of a DependencyObject.
-->
</Span>
</TextBlock>
To bind to Run.Text, checkout the BindableRun class by Fortes. Simple to implement, I use it all over my projects.
I found that implementing BindableRun correctly is pretty tricky - and almost all other available implementations will cause an exception from wpf layouting engine when the bound content changes from null to something non-null - see this problem, keyword "Collection was modified; enumeration operation may not execute."
Corrrect implementation from Microsoft is here - it shows how tricky this really is.
Solution: BindableRun class + the following markup:
<TextBlock>
<Button x:Name="MyButton" Command="{Binding Path=MyCommand}" Content="+" />
<common:BindableRun x:Name="Subject" BindableText="{Binding Path=Subject}"/>
</TextBlock>
Funny thing it works on the designer of a UserControl...
In that case, using the Property Change of your control to set the value to the Run is enough. I mean, if you had something like:
<TextBlock>
<Run Text="{Binding ElementName=thisCtrl, Path=Description}" />
</TextBlock>
Then just name the run, and on your property change handler of your UserControl DependencyProperty get/set the value.