/// <summary>
/// Converts the given object to the type of this converter, using the specified context and culture information.
/// </summary>
/// <returns>
/// An <see cref="T:System.Object"/> that represents the converted value.
/// </returns>
/// <param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"/> that provides a format context. </param>
/// <param name="culture">The <see cref="T:System.Globalization.CultureInfo"/> to use as the current culture. </param>
/// <param name="value">The <see cref="T:System.Object"/> to convert. </param>
/// <exception cref="T:System.NotSupportedException">The conversion cannot be performed. </exception>
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
string @string = value as string;
if (@string != null)
{
Period period;
if (TimeHelpers.GetPeriodPatterns(culture).TryParseAny(@string.Trim(), out period))
{
return(period);
}
TimeSpan timeSpan;
if (TimeSpan.TryParse(@string, out timeSpan))
{
// ReSharper disable once PossibleNullReferenceException
return(Period.FromTicks(timeSpan.Ticks).Normalize());
}
throw new NotSupportedException(
// ReSharper disable once AssignNullToNotNullAttribute
string.Format(Resources.PeriodConverter_ConvertFrom_CannotParse, @string));
}
if (value is TimeSpan)
{
TimeSpan timeSpan = (TimeSpan)value;
// ReSharper disable once PossibleNullReferenceException
return(Period.FromTicks(timeSpan.Ticks).Normalize());
}
if (value is Duration)
{
Duration duration = (Duration)value;
// ReSharper disable once PossibleNullReferenceException
return(Period.FromTicks(duration.Ticks).Normalize());
}
return(base.ConvertFrom(context, culture, value));
}
