Strange grammar sugar. I don't know what it means.

problem description

as shown in the figure below, the background framework for C-sharp development code, but I have not seen this syntax, excuse me, what does the following ~ Disposable () mean?
clipboard.png

the environmental background of the problems and what methods you have tried

related codes

public class Disposable: IDisposable

{
    private bool isDisposed;

    ~Disposable()
    {
        Dispose(false);
    }

what result do you expect? What is the error message actually seen?

Mar.17,2022

is not a grammatical sugar destructor

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bf644d-14523.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf644d-14523.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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