Are there such dll components to save the state of a C# program?

Question

C++ / C#

actually interested in the components that implement save\load

Answer 1

If there are no other requirements - use serialization. Binary or in XML, depending on the task.

Answer 2

Well, for example, there is a standard Settings: msdn.microsoft.com/en-us/library/aa730869(v=vs.80).aspx , which is good, so you don't have to think where the file is.
And then you do it yourself, initialize everything in the constructor, save it in the close event handler. In this case, this is conveniently done using attributes, just the necessary properties are marked with an attribute and that's it. Written in a couple of hours.
Or do you want WF: https://ru.wikipedia.org/wiki/Windows_Workflow_Fou... ?