How Do I Create A Permanene Memory ?

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Here is my problem:

I have a windows form through which i set the value of a inter to 5.

int a = 5;

Now when i close the application the value has to be stored somewhere. Again when the application is started the stored value has to be shown.

I am working in windows form application.

I there a way to achieve this without file stream ?

Any kind of help would be appreciated.

Posted 27-Jan-15 16:22pm

BibhutiAlmighty

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Sergey Alexandrovich Kryukov 27-Jan-15 23:02pm

What does it mean? Why without? Do you really know what happens to your computer where the power is disconnected?
—SA

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BacchusBeale · Answer 1 · 2015-01-27T16:30:00

Solution 1

You need to write to a file, database or windows registry. Your program runs in RAM and all memory is released/lost when it exits. There's no way to save except to permanent (actually persistent) storage such as HDD.

Posted 27-Jan-15 16:30pm

BacchusBeale

BillWoodruff · Answer 2 · 2015-01-27T18:28:00

One way to make variable values persist in WinForms is to use Application.Settings: [^].

There's a good tutorial here on CodeProject on how to use Application.Settings: [^].

However, I suggest you only use Application.Settings for exactly what that name implies: global settings for your Applcation: things like default BackGroundColor, Font, Window Sizes, etc.

If you have a lot of variables whose value you wish to store across sessions, then I think you should create a Class to hold those variables and their values and serialize the Class to a file, and then de-serialize it when your Application starts.

There are many good examples that show/teach you how to serialize and de-serialize a Class on CodeProject.