'Assembly.CodeBase' is obsolete: 'Assembly.CodeBase and Assembly.EscapedCodeBase are only included for .NET Framework compatibility. Use Assembly.Location.' (https://aka.ms/dotnet-warnings/SYSLIB0012)

The variable 'ex' is declared but never used

'DateTimeWithin' defines operator == or operator != but does not override Object.Equals(object o)

'DateTimeWithin' defines operator == or operator != but does not override Object.GetHashCode()

The variable 'XmlizedString' is assigned but its value is never used

The variable 'exception' is declared but never used

'Assembly.CodeBase' is obsolete: 'Assembly.CodeBase and Assembly.EscapedCodeBase are only included for .NET Framework compatibility. Use Assembly.Location.' (https://aka.ms/dotnet-warnings/SYSLIB0012)

'RNGCryptoServiceProvider' is obsolete: 'RNGCryptoServiceProvider is obsolete. To generate a random number, use one of the RandomNumberGenerator static methods instead.' (https://aka.ms/dotnet-warnings/SYSLIB0023)

'Type.IsSerializable' is obsolete: 'Formatter-based serialization is obsolete and should not be used.' (https://aka.ms/dotnet-warnings/SYSLIB0050)