When I have TextBlock. Run Text = "(" Run Text={Binding IncomeLoss} Run Text=")" in a Page it comes out looking ok,
but when I have the same thing inside a ControlTemplate that I apply to a class that derives from Control, there is extra space after each character like "( 100 ) ".
I read that ControlTemplate is a barrier to style inheritance, but how do I guess what exactly style parameter is the one missing that is usually inherited by the Textblock on a Page?
Make sure that you have put all Run elements on the same line in the ControlTemplate.
There is a difference in output between this:
<TextBlock><Run Text = "(" /><Run Text="{Binding IncomeLoss}"/><Run Text=")"/></TextBlock>
...and this:
<TextBlock>
<Run Text = "(" />
<Run Text="{Binding IncomeLoss}"/>
<Run Text=")"/>
</TextBlock>
If this doesn't work you should provide a minimal, complete, and verifiable example of your issue: https://stackoverflow.com/help/mcve
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>
Textblock have 3 run inlines. I need to save it to xml, and I use XamlWriter.Save for that, as the result I got this:
<TextBlock xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
FontSize="14" FontFamily="Georgia" >
ABC
<Run FontSize="13">DEF</Run>
GHI
</TextBlock>
The problem is, that this xaml is parsed then as a pure xml without using wpf framework. To make the parser work correctly I have to ensure, that xaml is presented like this:
<TextBlock xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
FontSize="14" FontFamily="Georgia" >
<Run>ABC</Run>
<Run FontSize="13">DEF</Run>
<Run>GHI</Run>
</TextBlock>
e.g. every inline is a separate tag. How can I do this?
I looked through properties and settings of XamlWriter and Inlines collection, but couldn't find anything that corresponds to that.
I have many FrameworkElements (TextBlock, CheckBox, ListBox..) and I would like to make something allowing me to show a small number besides every one control.
Some text ³
I came with the idea to write a MarkupExtension, where I could write that number like this:
..
<TextBlock Text="Some Text" SomeExtension="3" />
..
and then to add it somehow to the template of the Control.
But I'm sure, you guys have better solution for this problem ;)
One way to go with it would be create a Attached Property. Upon setting it on a control, a custom Adorner would be added for that control showing specified number.
Use the tag property to provide the number you want and inside the custom template databind to the property
<TextBlock Text="Some Text" Tag="3" />
and inside the controltemplate
<TextBlock Text="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Tag}"/>
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'm trying to make a Hyperlink that contains text with super- and/or subscripts. I've found two ways to do this, and both of them suck.
Solution #1: use Typography.Variants. This gives a terrific superscript... for some fonts.
<StackPanel>
<TextBlock FontFamily="Palatino Linotype" FontSize="30">
<Hyperlink>R<Run Typography.Variants="Superscript">2</Run></Hyperlink>
(Palatino Linotype)
</TextBlock>
<TextBlock FontFamily="Segoe UI" FontSize="30">
<Hyperlink>R<Run Typography.Variants="Superscript">2</Run></Hyperlink>
(Segoe UI)
</TextBlock>
</StackPanel>
(source: excastle.com)
Looks beautiful in Palatino Linotype; but for fonts that don't support variants, it's simply ignored, no emulation is done, and the text is full-size, at-baseline, 100% normal. I would prefer to allow my end-users to select the font they want to use, and still have super/subscripts work.
Solution #2: use BaselineAlignment. This raises or lowers the text appropriately, though unlike solution #1, I have to decrease the font size manually. Still, it's effective for all fonts. The problem is the Hyperlink's underline.
<TextBlock FontSize="30" FontFamily="Palatino Linotype">
<Hyperlink>
R<Run BaselineAlignment="Superscript" FontSize="12pt">2</Run>
</Hyperlink>
</TextBlock>
The underline is raised and lowered along with the text, which looks pretty wretched. I'd rather have a continuous, unbroken underline under the whole Hyperlink. (And before anyone suggests a Border, I'd also like the Hyperlink to be able to word-wrap, with all of the words underlined, including the first row.)
Is there any way to make superscript and subscript work in WPF, in any font, without looking laughably bad when underlined?
If the hyperlink isn't going to wrap to more than one line, then embedding another TextBlock can work:
<TextBlock FontSize="30" FontFamily="Palatino Linotype">
<Hyperlink>
<TextBlock>
R<Run BaselineAlignment="Superscript" FontSize="12pt">2</Run>
</TextBlock>
</Hyperlink>
</TextBlock>
This will give a solid hyperlink under the Hyperlink's child, which means an unbroken hyperlink:
However, if the embedded TextBlock needs to wrap to multiple lines, you'll only get one underline under the entire wrapped paragraph, rather than underlining each line of text:
(source: excastle.com)
If you can put a TextBlock only around a short bit of content that needs superscripts -- e.g., around just the R^2 in the above example -- and leave the rest of the text parented to the hyperlink, then you get underlining as normal. But sometimes that's not practical, so it's something to watch out for.
You can use the superscript unicode characters (e.g. http://www.fileformat.info/info/unicode/char/b2/index.htm)
Like this:
<TextBlock FontSize="30" FontFamily="Segoe UI">
<Hyperlink>
Apply R² Calculation
</Hyperlink>
</TextBlock>
Result:
Obviously this will not work unless what you are super scripting actually has a unicode superscript character.