codemeit

Archive for March, 2008

C# auto property

ReSharper is good tool, it taught me the auto property in .NET 3.5 today.

// traditional property declaration
    public class Foo
    {
        private string _name;
        public string Name
        {
            get { return _name; }
            set [...]

C# Extension method, GetValueOrNull for value type object

Return null if the value type object has default value.

public static T? GetValueOrNull<t>( this T value ) where T : struct
{
   if( value.Equals( default( T ) ) )
      return new Nullable<t>();
   else
      return value;
}
// Usage
int i = default(int); //0
int? i = i.GetValueOrNull();
Console.Writeline( i.HasValue );

// output: false