What problem is the IDisposable interface supposed to solve?

Question

.NET

What problem is the IDisposable interface supposed to solve?

Answer 1

tl;dr; To give an interface for explicitly releasing some resource, usually an unmanaged one.
Quote from documentation

This interface is primarily used to release unmanaged resources. The garbage collector automatically frees the memory allocated to a managed object when that object is no longer in use. However, it is impossible to predict when a garbage collection will occur. Moreover, the garbage collector has no knowledge of unmanaged resources, such as window handles, or open files and streams.
Use the Dispose method of this interface to explicitly deallocate unmanaged resources in conjunction with the garbage collector. The consumer of an object can call this method when the object is no longer needed.