public static T Read <T>(this DataReader reader, string column, T defaultValue = default(T))
{
var value = reader[column];
return((DbNull.Equals(value))
? defaultValue
: Convert.ChangeType(value, typeof(T)));
}
public static TDestination As<TDestination> (this object source, TDestination defaultValue = default(TDestination))
{
if (source is TDestination)
return (TDestination) source;
if (source == null || DbNull.Equals(source))
return defaultValue;
Func<object, TDestination> func;
// Check if we have a func for the desired type...
if(_MyConverter.TryGetValue(typeof(TDestination), out func);
{
// ... and call it.
return func(source);
}
// Nothing suitable to find.
throw new ArgumentException("The type " + typeof(TDestination).Name + " is not supported.");
}