How to check/uncheck checkbox on button click in win C#

Question

Dear all i'm using window form with on check box i want checkbox check/uncheck on button click event in window form c# Thanks

Tanmay Hajra · Answer

I think u have multiple ways for doing this like : 1. U have to find the Checkbox control present in Form1 in the Button click event in Form2. 2. U have to declare one boolean property in Form1 which will check and uncheck the checkbox present in Form1. then just set the property from Form2 button click event. Please check following link :https://stackoverflow.com/questions/8566/best-way-to-access-a-control-on-another-form-in-windows-forms

Rafnas T P · Answer

in check box alrady have an even called CheckedChangedo use this just double click on that check box then you can see an event as follows private void checkBox1_CheckedChanged( object sender EventArgs e) { } inside this you can have condition what you wanted to do when checked and when unchecked as follows private void checkBox1_CheckedChanged( object sender EventArgs e) { if (checkBox1.Checked== true ) { //do whtever here when checked } if (checkBox1.Checked == false ) { //do whtever here when un checked } }

Gopal Sharma · Answer

/*Suppose your checkbox Name=chkTest and Button Name btnToggle */ private void btnToggle_Click(object sender EventArgs e) { chkTest.Checked = !chkTest.Checked; }

Nilesh Jadav · Answer

Try follow link : This is based on asp.net but I am sure it will work in win application too : http://meeraacademy.com/checkbox-control-checkuncheck-on-button-click-event-in-net/ For win application - specifically for uncheck : http://www.c-sharpcorner.com/blogs/uncheck-checkboxlist-items-when-button-is-clicked1

Sivasankar Gorantla · Answer

private void button_Click( object sender EventArgs e) { if(checkBox1.Checked)//if checked uncheck it { checkBox1.Checked= false; } else // if unchecked check it { checkBox1.Checked= true; } }

Gopal Sharma · Answer

Hi Rajveer You have not mentioned the exact scenrio. If you are using button and checkbox on different forms. Then mentione also how you are displaying your form like dialog box etc. which one is your parent form.

Rajkiran Swain · Answer

if ( checkBox . Checked ) { checkBox . Checked = false ; } else { checkBox . Checked = true ; }

Tanmay Hajra · Answer

Rajveer.. for Stackoverflow exception check below link: https://stackoverflow.com/questions/206820/how-do-i-prevent-and-or-handle-a-stackoverflowexception

Rajveer singh · Answer

not working any code actually i have two form  first form have check box and second form have button  i want click button on second form and uncheck checkbox on first form

Rajveer singh · Answer

An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll return error

Tanmay Hajra · Answer

On Button click event use Checkbox's Checked Property .Set true for checking the same and vice versa .

Jitendra Shekhawat · Answer

http://csharp.net-informations.com/gui/cs-checkbox.htm https://www.youtube.com/watch?v=Sbg5MD5WYtk http://www.c-sharpcorner.com/uploadfile/mahesh/checkbox-in-C-Sharp3/ http://www.guru99.com/c-windows-forms-application.html

Jitendra Shekhawat · Answer

private void toggButton_CheckedChanged ( object sender  EventArgs e ) { // everytime you click the button checkbox states will change. if ( checkBox . Checked ) { checkBox . Checked = false ; } else { checkBox . Checked = true ; } }