public static void Main()
var durationTest = "PT7M43S";
Console.WriteLine(XmlConvert.ToTimeSpan(durationTest));
Console.WriteLine(XmlConvert.ToTimeSpan(durationTest).ToString("c"));
Console.WriteLine(XmlConvert.ToTimeSpan(durationTest).ToString("g"));
Console.WriteLine(XmlConvert.ToTimeSpan(durationTest).ToString("G"));
Console.WriteLine(XmlConvert.ToTimeSpan(durationTest).ToString("dd\\:hh\\:mm\\:ss"));