.NET Debugging - Windbg

What Programmers Say when Their Programs Don't Work

Converters with Parameters

Converter

[ValueConversion(typeof (object), typeof (string))]

public class StringFormatConverter : IValueConverter {

  public object Convert(object i_value, Type i_targetType, object i_parameter,                              System.Globalization.CultureInfo i_culture) {

    string _format = i_parameter as string;

    if (!string.IsNullOrEmpty(format)) {

         return string.Format(i_culture, _format, i_value);

        }

    return i_value.ToString();

  }

…

}

XAML

<Window.Resources>

  <HierarchicalData:Employee x:Key="myEmployee" FirstName="George" LastName="Lache" Position="DEV" Salary="2000"></HierarchicalData:Employee>

  <Converter:StringFormatConverter x:Key="StringFormatConverter" />

</Window.Resources>

<StackPanel DataContext="{StaticResource myEmployee}">

  <Label Content="{Binding FirstName, Converter={StaticResource StringFormatConverter}, ConverterParameter='Many thanks to {0}'}" />

  <Label Content="{Binding Salary, Converter={StaticResource StringFormatConverter}, ConverterParameter='My salary is thanks to {0:c}'}" />

  <Label Content="{Binding Salary, Converter={StaticResource StringFormatConverter}, ConverterParameter=\{0:c\}}" />

  <TextBox Text="{Binding Path=Salary, StringFormat=\{0:c\}}" />

</StackPanel>




Result

Readonly Collections are Wrappers over the Read/Write Collections

    class Program
    {
        static void Main(string[] args)
        {
            //Readonly Collections are Wrapper over the Read/Write Collections
            ObservableCollection<string> _observableCollection = new ObservableCollection<string>() { "Mitica", "Dragomir"};
            ReadOnlyObservableCollection<string > _readOnlyObservable = new ReadOnlyObservableCollection<string>(_observableCollection);

            _observableCollection.Add("Gigi");
            //_observableCollection and _readOnlyObservable have both 3 items.

            List<string> _list = new List<string> { "Mitica", "Dragomir" };
            List<string> _list2 = new List<string>(_list);//here is created a new list of pointers
            ReadOnlyCollection<string> _collection = new ReadOnlyCollection<string>(_list);
            
            _list.Add("Gigi");
            //_list has 3 items  // _list2 has 2 items // _collection has 3 items

            
        }

    }