C# Managed and unmanaged resources

Managed resources

Managed resources are generally referred to as being CLR Control of memory resources , These resources can be managed by CLR To control , For example, objects allocated in a program , Variables within the scope .

Unmanaged Resources

Unmanaged resources are CLR Parts that cannot be controlled or managed , There are many of these resources , Like file streams , Database connection , Window handle to the system , Printer resources etc. , These resources generally do not exist in Heap（ A place in memory where object instances are stored ） in .

CLR

C# Is a programming language , It's running on CLR Upper ,CLR Provides its compilation environment . CLR, That is, the common language runtime ,CLR It provides a programming model that all types of applications should use . Including file loader , Garbage collector , Security system , Thread pool, etc .CLR It also provides an object-oriented programming model , Defines what types and objects are , And how they behave .
CLR：Common Language Runtime, It's a multi programming language “ Runtime ”.CLR Core functions （ For example, memory management 、 Assembly loading 、 Security 、 Exception handling and thread synchronization ） Can be oriented by CLR All languages of (C#,Visual Basic,F# etc. ) Use .