wpf newline

method 1:
<TextBlock Text="First line
Second line"/> 
Add: 
 
in the middle of the text. This method is very useful and can also be used on ToolTip: 
<ToolTip Width="200" Content="'First row'  
                   'Second row'  
                   'The first row Three lines'"/>

Method 2:
<TextBlock xml:space="preserve">
first row
 second line
</TextBlock>
 Preserve can preserve spaces in xaml
 Method 3:
<TextBlock Text="{Binding StringFormat='the first line {0} the second line {0} the third line',
                           Source={x:Static s:Environment.NewLine}}" />

<sys:String x:Key="NewUpdateWillShow" xml:space="preserve">First line Second line </sys:String>

Newline is

Must add xml:space="preserve", otherwise the newline character is invalid.

 

<sys:String x:Key="txtEditorTipSrc" xml:space="preserve">First line Second line</sys:String>

 

Official document reference: http://msdn.microsoft.com/zh-CN/library/cc189036(VS.95).aspx#whitespace