christiannagel

<Style x:Key="TreeViewStyle1" TargetType="TreeView">
    <Setter Property="IsTabStop" Value="False"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TreeView">
                <TreeViewList x:Name="ListControl" AllowDrop="False" 
                              CanReorderItems="False" 
                              CanDragItems="False" 
                              ItemContainerStyle="{StaticResource TreeViewItemStyle}" 
                              ItemTemplate="{StaticResource CultureItemDataTemplate}">

christiannagel

<DataTemplate x:Key="CultureItemDataTemplate">
    <StackPanel Orientation="Horizontal" Height="40">
        <TextBlock Text="{Binding Content.CultureInfo.EnglishName}" VerticalAlignment="Center" />
    </StackPanel>
</DataTemplate>

christiannagel

// C# 6
long n1 = 0x1234567890ABCDEF;

// C# 7
long n2 = 0x1234_5678_90AB_CDEF;

// C# 7.2
long n2 = 0x_1234_5678_90AB_CDEF;

christiannagel

uint binary1 = 0b1111_0000_1010_0101_1111_0000_1010_0101;

christiannagel

// C# 6
private string _firstName;
public string FirstName
{
  get { return _firstName; }
  set { Set(ref _firstName, value); }
}

// C# 7
private string _firstName;

christiannagel

// C# 6
string n = "42";
int result;
if (string.TryParse(n, out result)
{
  Console.WriteLine($"Converting to a number was successful: {result}");
}

// C# 7
string n = "42";

christiannagel

// C# 7.0
if (Enum.TryParse(weekdayRecommendation.Entity, ignoreCase: true, 
  result: out DayOfWeek weekday))
{
  reservation.Weekday = weekday;
}

// C# 7.2
if (Enum.TryParse(weekdayRecommendation.Entity, ignoreCase: true, 
  out DayOfWeek weekday))

christiannagel

public readonly struct Dimensions
{
  public double Length { get; }
  public double Width { get; }

  public Dimensions(double length, double width)
  {
    Length = length;
    Width = width;
  }

christiannagel

static void CantChange(in AStruct s)
{
  // s can’t change
}

christiannagel

// C# 7.0
int x = default(int);
ImmutableArray<int> arr = default(ImmutableArray<int>);

// C# 7.1
int x = default;
ImmutableArray<int> arr = default;