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