Save changes in windows form after hide ?

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Hi In my windows application i have two forms
Mainform , subform
In my subform i have checkbox
My problem is to save change in my checkbox when hide subform becouse i read value for checkbox in mainform

What I have tried:

I try to add this code to button in subform
This.visible=false;
But checkbox back to default when reopen subform

Posted 18-Apr-17 21:22pm

sam9787

Updated 18-Apr-17 21:35pm

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sameer549 19-Apr-17 3:35am

you cannot achieve this directly, you need to save the checkbox state in some variable and then hide/show checkbox in subform load event.

http://stackoverflow.com/questions/14616958/saving-the-form-state-then-opening-it-back-up-in-the-same-state

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OriginalGriff · Answer 1 · 2017-04-18T21:35:00

Changing the state of anything isn't permanent unless you specifically code for it to be.

The best way to handle this would be to add a setting:
1) Open your projects Properties in the solution explorer, and double click on "Settings.settings"
2) In the resulting grid, change the Name to "MySetting", and set the Value to "Defaulted value". Leave Type and Scope as "string" and "User" respectively.
3) Save and close the settings window.
4) To read your setting:

string s = Properties.Settings.Default.MySetting;

5) To write your setting:

Properties.Settings.Default.MySetting = "My new setting value";
Properties.Settings.Default.Save();

Then add code to the form save and load methods to use the saved setting and update the visible status of your checkbox in the form Load and Close events.