<PackageReference Include="System.Configuration.ConfigurationManager" Version="7.0.0-preview.2.22152.2" />

TimeSpanMinutesConverter

using System.ComponentModel; using System.Globalization; namespace System.Configuration { public class TimeSpanMinutesConverter : ConfigurationConverterBase { public override object ConvertTo(ITypeDescriptorContext ctx, CultureInfo ci, object value, Type type) { ValidateType(value, typeof(TimeSpan)); return ((long)((TimeSpan)value).TotalMinutes).ToString(CultureInfo.InvariantCulture); } public override object ConvertFrom(ITypeDescriptorContext ctx, CultureInfo ci, object data) { long num = long.Parse((string)data, CultureInfo.InvariantCulture); return TimeSpan.FromMinutes((double)num); } } }