Scoping private variables within a class

[stokara]

In my most common use case of property backing fields I would like to be able to be sure that the private field is not modified externally to the property setter. To visually indicate this I commonly declare the field above the property. It would be great to have this ensured by the compiler by having the variable scoped within the property perhaps like this:

public Type PropertyName {
private Type field;
get => field;
set => setMethod(ref field, value);
}

[Joe4evr]

#1643, #140, #1497, etc.

[bondsbw]

#133

[AustinBryan]

A better name for this would be "property scoped variables." Also, please reformat your code

[Unknown6656]

Oh boy - here we go again with the duplicates:

See #1497 (comment)

And ...
#1643
#1497
#1420
#1336
#1290
#1240
(#1059)
#626
#318
#140
#133
[and there are probably even more]

[stokara]

mea culpa - I did this without searching.

[Unknown6656]

Considered in https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-04-01.md