.NET, NuGet, other libraries

In scripts can be used everything from .NET libraries. Don't need to add assembly references. Add just using directives that aren't in file global.cs.

using System.Xml.Linq;

var x = XElement.Load(@"C:\Test\file.xml");

Many other managed libraries can be downloaded, for example from NuGet or GitHub. To install NuGet packages, use menu Tools > NuGet.

When a NuGet package or some other library is installed, need to add its reference to scripts where you want to use it. You can do it in the NuGet tool or in Properties. Then you'll find one or more new namespaces in the Ctrl+Space list, and can use them.

/*/ nuget -\Humanizer; /*/
using Humanizer;

var s = "one two";
s = s.Titleize();
print.it(s);

If a library has several versions for different .NET frameworks, use the newest .NET version, if available, else .NET Standard. If these are unavailable, probably the library is abandoned and should not be used. Don't use libraries for .NET Framework 4.x and older.