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

Rajveer singh

9y62.7kVisual Basic .NET

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

13 Replies

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Tanmay Hajra9y ago
Accepted 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
+3
Sivasankar Gorantla9y ago
1. private void button_Click(object sender, EventArgs e)
2. {
3. if(checkBox1.Checked)//if checked, uncheck it
4. {
5. checkBox1.Checked= false;
6. }
7. else // if unchecked, check it
8. {
9. checkBox1.Checked= true;
10. }
11. }
0
Rafnas T P9y ago
in check box alrady have an even called CheckedChanged,o 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
           }
       }
+3
Gopal Sharma9y ago
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.
+1

Rajkiran Swain9y ago

if(checkBox.Checked)

 checkBox.Checked = false;

 else

  checkBox.Checked = true;

Tanmay Hajra9y ago
Rajveer.. for Stackoverflow exception check below link: https://stackoverflow.com/questions/206820/how-do-i-prevent-and-or-handle-a-stackoverflowexception
+1
Rajveer singh9y ago
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
+1
Gopal Sharma9y ago
/*Suppose your checkbox Name="chkTest" and Button Name "btnToggle" */

private void btnToggle_Click(object sender, EventArgs e)
{
chkTest.Checked = !chkTest.Checked;
}

+2
Rajveer singh9y ago
An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll
return error
+1
Tanmay Hajra9y ago
On Button click event use Checkbox's Checked Property .Set true for checking the same and vice versa .
+1
Jitendra Shekhawat9y ago
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
0
Nilesh Jadav9y ago
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
+2

Jitendra Shekhawat9y ago

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;