How do I save checkbox state into external file?

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Hello,

I want to save state of a checkbox and later reopen it again showing those information as I marked on checkbox, e.g. I have around 20 checkboxes and maximum number to check them in real life is 10, but they are always different, how do I save those information given to an external file without database, any idea?

Posted 29-Dec-15 9:25am

Medin Smaili

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Sergey Alexandrovich Kryukov 29-Dec-15 16:04pm

Are you sure you need external file and nothing else? That file could be on the server side, but it may not be the best approach.
—SA

3 solutions

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ZurdoDev · Answer 1 · 2015-12-29T09:33:00

Solution 1

You can use localStorage, HTML5 Web Storage[^]. It works similar to cookies.

Posted 29-Dec-15 9:33am

ZurdoDev

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Medin Smaili 18-Jan-16 15:23pm

problem is that i am saving in external file localy

ZurdoDev 18-Jan-16 15:25pm

My suggestion is don't use an external file. You can't on the client's machine anyway.

So, you must mean on the server side? If so, what is the problem? If you are already storing the values in a file then what is the problem?

Medin Smaili 18-Jan-16 15:28pm

I wanna update the program as well, but later of course adding the web based app, database and fixing all bugs that I have currently, to be paid fully. hope you understand why I added external files :)

ZurdoDev 18-Jan-16 15:30pm

No, I don't understand why, but that is not important. What IS important is what exactly is your question then?

Medin Smaili 18-Jan-16 15:33pm

Okay, I have three rows with the check box selection:
First Row: chkbx1, chkbx2, chkbx3
Second Row: chkbx1, chkbx2
Third Row: chkbx1, chkbx2
in this three rows in each row should be selected one check box so I need those check box state to be saved in saveFileDialog

ZurdoDev 18-Jan-16 15:45pm

You keep saying what you want but you aren't telling us where you are stuck. For example, do you know how to write to external files? The easy way is to do csv.

Ashutosh shukla207 · Answer 2 · 2016-02-08T22:56:00

Solution 3

C# Corner : Error Display[^]

Read Above link first ... then below link to maintain hash table in view state

How to persist a property of type HashTable in viewstate - asp.net.state-management[^]

Posted 8-Feb-16 22:56pm

Ashutosh shukla207

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CHill60 15-Mar-16 9:16am

Use the Improve solution link to update your posts instead of posting another solution - it is confusing

Ashutosh shukla207 · Answer 3 · 2015-12-29T09:48:00

Solution 2

u can maintain a hash table in viewstate . with key -value pair . and update it on the postback of each checkbox . and do the things . . try it

Posted 29-Dec-15 9:48am

Ashutosh shukla207

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Medin Smaili 18-Jan-16 15:24pm

can you send me a demo link please cause i'm still begginer

Ashutosh shukla207 15-Mar-16 9:20am

you can read more about the features of viewstate from here :
http://stackoverflow.com/questions/18821957/assigning-datatable-to-viewstate-is-a-good-way