How can I store values in a variable permanently even after restarting machine?

Question

I want to store values permanently in a variable. The same variable should be able to be edited and saved by user, and whatever it is I need the value of the variable from the last time I modified it, like a database. Please explain me with some examples!

depending on whether you application is multi user etc then the simplest solution would be to use the built in Settings in .net your question doesnt really give enough information but you could check here for a start... http://msdn.microsoft.com/en-us/library/aa730869(v=vs.80).aspx — WraithNath, Jul 24 '12 at 14:16
A bit more information would be useful, what kind of application are you building? Windows? Web? — Nigel B, Jul 24 '12 at 14:16
Um, write it to a file. Your question does not should that least bit of evidence that you have done research first, or tried to solve it on your own. — GrayFox374, Jul 24 '12 at 14:16

score 4 · Accepted Answer · answered Jul 24 '12 at 14:15

4

You need to serialize it somewhere that persists when the computer is rebooted, and then read it when your program starts again. This could be a database, (for simpler DBs, look at something like SQLite) an XML file, etc.

answered Jul 24 '12 at 14:15

Tim S.

55,448
7
96
122

score 3 · Answer 2 · answered Jul 24 '12 at 14:15

3

You can't. You need persistent storage for this (database, file, registry, etc)

answered Jul 24 '12 at 14:15

Sergey Berezovskiy

232,247
41
429
459

score 2 · Answer 3 · edited May 23 '17 at 10:34

2

Depending on your application you can save your variables for example in a config file or database.

After your application gets started again you load the settings.

edited May 23 '17 at 10:34

Community

1
1

answered Jul 24 '12 at 14:15

dknaack

60,192
27
155
202

score 2 · Answer 4 · answered Jul 24 '12 at 14:15

2

write the data in a file. when you than restart the application you can read the parameters out of this file and set some variables.

file could mean - sql, db, ini or whatever you are using.

all the best

answered Jul 24 '12 at 14:15

devanand

5,116
2
20
19

score 1 · Answer 5 · answered Jul 24 '12 at 14:16

you can use Properties.Settings advantage is that you can Save a variable per user scope or have Application scope at the same time

internal class Program
    {
        private static void Main(string[] args)
        {
            Properties.Settings1.Default.Test = "StackOverFlow";
            Properties.Settings1.Default.Save();
            Console.ReadKey();
        }
    }

How can I store values in a variable permanently even after restarting machine?

5 Answers5

Linked

Related