Develop Reference

UWP: Wrapping text at textbox doesn't work

I trying to wrap text at textBox but there are no success..
<Grid Margin="0,0,0,0" BorderThickness="1" BorderBrush="Gray">
<ScrollViewer VerticalScrollBarVisibility="Visible" HorizontalScrollBarVisibility="Auto" >
<TextBox x:Name="Details" IsReadOnly="True" HorizontalAlignment="Left" TextWrapping="Wrap" VerticalAlignment="Stretch" BorderThickness="0" Height="500" />
</ScrollViewer>
</Grid>
If I have long line without \n I have long string with horizontal scrollbar. But how I understand TextWrapping="Wrap" should cut this string.
I saw this answer but this is not suitable for me because I can have different width of this textBox.
Also I tried to use AcceptsReturn="True" with no success.
I glad to hear any ideas on how to make it works.

I'm not sure if this is what you are looking for, but i'm wondering why you don'disable horizontal Scrolling.
<ScrollViewer Grid.Column="2" VerticalScrollBarVisibility="Visible" HorizontalScrollBarVisibility="Disabled">
<TextBlock Text="TextusLongusTextusLongusTextusLongusTextusLongusTextusLongusTextusLongusTextusLongus" TextWrapping="Wrap" VerticalAlignment="Stretch"/>
</ScrollViewer>

You don't define any sort of width restriction. Which means that your TextBox can theoratically expand infinitely in width.
Try to either set its width in your XAML code or its maxwidth.
You can also forget about the ScrollViewer. It's already a part of the TextBox and you could just add the elements that you set in your ScrollViewer as an element of the TextBox.
Justt add it like ScrollViewer.VerticalScrollBarVisibility="Visible"

Setting VerticalContentAlignment in my WPF TabItem changes both the text in the tab and the Control contained in the tab

<TabItem Header="Data Entry"
FontSize="40"
VerticalContentAlignment="Top"
HorizontalContentAlignment="Center"
VerticalAlignment="Center"
Height="75"
Width="300"
Background="#464646"
Foreground="White"
DataContext="{Binding Tabs[0]}">
<Controls:DataEntryUserControl />
</TabItem>
My TabItem is formed with the code above. I want the text in the tab ("Data Entry") to be aligned to the center of the tab, but I want the UserControl to be aligned to the top of the window. However, both of these alignments change when I set VerticalContentAlignment (e.g. in the code above, both of them are aligned to the top of their respective parents). The VerticalAlignment property doesn't change anything.
How can I accomplish this?

Define a HeaderTemplate where you specify the alignment of the header:
<TabItem Header="Data Entry"
FontSize="40"
Height="75"
Width="300"
Background="#464646"
Foreground="White"
DataContext="{Binding Tabs[0]}">
<TabItem.HeaderTemplate>
<DataTemplate>
<TextBlock Text="{Binding}" HorizontalAlignment="Center" />
</DataTemplate>
</TabItem.HeaderTemplate>
<Controls:DataEntryUserControl />
</TabItem>

WPF How do I make a Border width expand to fill available space in a DockPanel

I have a custom control ButtonRow which will end up going into a different control.
It is very simple, it has one Border, on label and one button.
I need to make it so that the border will extend its width to fill up to where the button is.
This is not happening as you can see in the below image:
The XAML can be found below. I have tried fiddling about with the horizontal alignment of both he label and the border, but they will only ever re-size to fit the text content of the label.
I know there are existing question with very similar problems and names, but none have needed to do quite the same thing or have helped me solve my problem.
I have tried using a StackPanel in horizontal alignment but all it did was make the button go next to the border.
How can I make the border expand to fill the available space?
<Grid>
<DockPanel Height="Auto" HorizontalAlignment="Stretch" Margin="0" Name="dockPanel1" VerticalAlignment="Top" Width="Auto">
<Border BorderBrush="#FFDADFE1" Background="#FFECF0F1" BorderThickness="1" Height="20" Name="bdrFilter" HorizontalAlignment="Stretch">
<Label Content="Filter..." FontStyle="Italic" Foreground="#FF6C7A89" Height="20" Name="lblFilter" Padding="5,0" HorizontalContentAlignment="Stretch" HorizontalAlignment="Stretch" />
</Border>
<Button Style="{StaticResource FlatButtonStyle}" Content="+" Height="20" HorizontalAlignment="Right" Name="btnAddFilter" VerticalAlignment="Top" Width="20" Foreground="#FF6C7A89" ForceCursor="True" BorderBrush="{x:Null}" />
</DockPanel>
</Grid>
(The button style does not affect its alignment or any other relevant properties)

A DockPanel is not the correct Panel to use for this requirement... like a StackPanel, it does not resize its contents. Instead, just use a regular Grid (which also uses less resources than a DockPanel):
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Border BorderBrush="#FFDADFE1" Background="#FFECF0F1" BorderThickness="1"
Height="20" Name="bdrFilter" VerticalAlignment="Top">
<Label Content="Filter..." FontStyle="Italic" Foreground="#FF6C7A89"
Height="20" Name="lblFilter" Padding="5,0" />
</Border>
<Button Grid.Column="1" Content="+" Height="20" HorizontalAlignment="Right"
Name="btnAddFilter" VerticalAlignment="Top" Width="20" Foreground="#FF6C7A89"
ForceCursor="True" BorderBrush="{x:Null}" />
</Grid>
Please see the Panels Overview page on MSDN for more information about the different Panels in WPF.

This might help you out. Setting LastChildFill=True inside a DockPanel does exactly what the name suggests.

How to make ScrollViewer work only when texblock in it has height greater than ScrollViewer height?

In my ListBox I show different content including text. Text can be long or short. It scrolls by ScrollViewer. Code:
<ScrollViewer MaxHeight="300" VerticalAlignment="Top" Grid.Column="1" Grid.Row="1" >
<TextBlock Style="{StaticResource TextsTextBlock}" Text="{Binding Texts}" Grid.Column="1" Grid.Row="1" />
</ScrollViewer>
and it's also working if text is short, and height of this text do not reach MaxHeight of ScrollViewer. I want to make ScrollViewer works only when text is long and it's height greater than ScrollViewer's MaxHeight, else - it doesn't have to work.
Tried border
<Border BorderBrush="Aqua" BorderThickness="2" MaxHeight="300" VerticalAlignment="Top" Grid.Column="1" Grid.Row="1">
<ScrollViewer VerticalAlignment="Top" VerticalScrollBarVisibility="Auto" >
<TextBlock Style="{StaticResource TextsTextBlock}" Text="{Binding Texts}" Grid.Column="1" Grid.Row="1" />
</ScrollViewer>
</Border>
but it's still scrolls in this border.

Set the VerticalScrollBarVisibility property to Auto.
The default value is Visible which means that the scroll bar is always shown.
By contrast the HorizontalScrollBarVisibility property has a default value of Hidden.

Try removing some of the Grid. properties from the inner controls
<Border BorderBrush="Aqua" BorderThickness="2" MaxHeight="300" VerticalAlignment="Top" Grid.Column="1" Grid.Row="1">
<ScrollViewer VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Disabled" >
<TextBlock Text="text" TextWrapping="Wrap"/>
</ScrollViewer>
</Border>
this works fine with one line of text
If I copy paste your code it works fine

WPF Issues with Control Layout

I am making an application that connects to our billing software using its API, and I am running into a few issues getting the layout working properly.
I want to make it so that when one of the expanders is minimized, the other window fills the gap, and when it is expanded again the other expander goes back to where it was. Right now when the arrow is clicked on one, there is just an empty gap. I used a DockPanel as the parent which I assumed would automatically do this, but it isn't working.
Second question, is there a way to make these areas resizable? I don't want to try and get too frisky with allowing the user to undock the menus (don't even know if that is possible with just straight WPF) but it would be nice if they could change the width/height of them.
Also, just a newbie question to C#, but what is the equivalent of a C++ header file? It looks like you just use .cs files, but I am not sure. I want to extract all of my functions that pull the data from the billing software and put them into a different file to clean up the code.
Here is my XAML...
<Window x:Class="WpfApplication3.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Billing Management" Height="550" Width="754" xmlns:shared="http://schemas.actiprosoftware.com/winfx/xaml/shared" WindowStartupLocation="CenterScreen" WindowStyle="ThreeDBorderWindow">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="22" />
<RowDefinition />
</Grid.RowDefinitions>
<Menu Height="22" Name="menu1" Margin="0" HorizontalAlignment="Stretch" VerticalAlignment="Top" HorizontalContentAlignment="Left" IsEnabled="True" IsMainMenu="True">
<MenuItem Header="_File">
<MenuItem Header="_Open" />
<MenuItem Header="_Close" />
<Separator/>
<MenuItem Header="_Exit" />
</MenuItem>
</Menu>
<TabControl Name="tabControl1" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" BorderThickness="1" Padding="0" TabStripPlacement="Bottom" UseLayoutRounding="False" FlowDirection="LeftToRight" Grid.Row="1">
<TabItem Header="Main" Name="tabItem1" Margin="0">
<DockPanel Name="dockPanel1" LastChildFill="True">
<ListBox Height="100" Name="listBox3" DockPanel.Dock="Top" />
<ListBox Name="listBox4" Width="200" DockPanel.Dock="Right" />
<DockPanel Height="Auto" Name="dockPanel2" Width="Auto" VerticalAlignment="Stretch" LastChildFill="True">
<shared:AnimatedExpander Header="Staff Online" Width="200" Name="expanderStaffOnline" IsExpanded="True" Height="194" BorderThickness="0" DockPanel.Dock="Top" VerticalContentAlignment="Stretch">
<ListBox Name="listboxStaffOnline" Width="Auto" Height="Auto" Margin="0" VerticalAlignment="Stretch" Loaded="listboxStaffOnline_Loaded" />
</shared:AnimatedExpander>
<shared:AnimatedExpander Header="Test Menu 2" Height="Auto" Name="animatedExpander1" BorderThickness="1" Margin="0,0,0,0" IsExpanded="True" VerticalContentAlignment="Stretch">
<ListBox Height="Auto" HorizontalAlignment="Stretch" Name="listBox6" VerticalAlignment="Stretch" Margin="0" BorderThickness="1" />
</shared:AnimatedExpander>
</DockPanel>
<ListBox Height="100" Name="listboxAdminLogs" DockPanel.Dock="Bottom" Loaded="listboxAdminLogs_Loaded" />
<ListBox Name="listBox5" />
</DockPanel>
</TabItem>
<TabItem Header="Support" Name="tabItem2" Margin="0">
</TabItem>
<TabItem Header="Clients" />
<TabItem Header="Billing" />
<TabItem Header="Orders" />
</TabControl>
</Grid>
</Window>

You should place your expanders in a Grid which will allow the content to expand and fill automatically. providing the Row / Column definitions width / height are set to Auto or *.
If you want to resize you will need to use the GridSplitter; see http://www.wpftutorial.net/GridLayout.html for further details.
I don't know C++ so can't really tell you want the equivalent of header files are but I think what you are trying to do is achievable using partial classes; see http://msdn.microsoft.com/en-us/library/wa80x488(v=vs.80).aspx for further details.
And finally, to answer your question in your comments; To get a uniform appearance for all controls in WPF you would need to create custom Styles which use a common set of Colors / Brushes.

I suggest you put the expanders in a Grid and set the row height of the gridrows to auto.
To make it resizable simply add GridSplitters in inbetween rows of this grid.
As for your added question: I think it would be better to copy the style of the expanders' headers and use it for a label or other header.
Also (many questions in this one): C# has no header files.