Difference Between Finalize and Dispose

Question

Both uses to perform garbage collection of run-time objects of .NET applications. The finalize method is automatically fired by runtime and dispose method call by the programmer, both are uses for the memory releases.disposable method is implemented of IDispsable interface. finalize implicitly call but dispose explicitly call.

Naushad Akhtar · Answer

Finalize: 1. Finalize() belongs to the Object class. 2. It is automatically called by the Garbage Collection mechanism when the object goes out of the scope(usually at the end of the program) 3. It is slower method and not suitable for instant disposing of the objects. 4. Example: class employee { ~employee() { } This destructor is implicitly compiled to the Finalize method. } Dispose: 1. Dispose() belongs to the IDisposable interface 2. We have to manually write the code to implement it(User Code) ex: if we have emp class we have to inherit it from the IDisposable interface and write code. We may have to suppress the Finalize method using GC.SuppressFinalize() method. 3. Faster method for instant disposal of the objects. 4. dispose() faster than Finalize() . 5. Example: user interface Controls. Forms, SqlConnection class have built in implementaion of Dispose method. try { string constring = "Server=(local);Database=my; User Id=sa; Password=sa"; SqlConnection sqlcon = new SqlConnection(constring); sqlcon.Open(); // here connection is open //code will be executed here } catch { // code will be execute when error occurred in try block } finally { sqlcon.Close(); // close the connection sqlcon.Dispose(); // detsroy the connection object }