Find solution. You can using action Run Powershell Script for executing .net library.
Set-Location C:\Projects\NvSearch\bin\Debug\net48\
[void][Reflection.Assembly]::LoadFile("C:\Projects\NvSearch\bin\Debug\net48\NvSearch.dll")
[NvSearch.Class1]::Test("test", 2)
Desciption:
Set-Location C:\Projects\Libs\ - Path to your library folder
[void][Reflection.Assembly]::LoadFile("C:\Projects\Libs\MyLIb.dll") - Path to your library
[LibNamespace.TestClass]::TestMethod("hello", 1) -
LibNamespace - namespace in your lib
TestClass - сlass name
TestMethod - method name in TestClass
("test", 2) - method args
Powershell 6+ required if you need to execute net5.0 library