how do i access a control from another form

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how do i access a control on form 1 from a button click event on form 2?
am trying to fill a combo box on form one with the updated data. The data is updated on form two. how do i go about doing this?

this is the code am using

mainForm mf = new mainForm();
mf.intdept.Items.Clear();

Posted 18-Jun-11 8:01am

Member 7250221

Updated 18-Jun-11 8:08am

v2

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3 solutions

Solution 3

This is a popular question about form collaboration. The most robust method is implementing appropriate interface in form class.

Please see my past solution:
How to copy all the items between listboxes in two forms[^].

—SA

Posted 18-Jun-11 14:40pm

Sergey Alexandrovich Kryukov

Solution 2

in Form1 :

Create 1 Label control set text as 'Form1'

Label1.Modifier=select as PUblic

in Form2

place Button1:

code under button1_click event of Form2 :

Form1 obj = new Form1();
obj.button1.Text = "raise";
obj.Show();

Posted 18-Jun-11 8:52am

Srinivas Kumar Pasumarthi

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#realJSOP · Accepted Answer · 2011-06-18T08:06:00

You could:

0) Create a custom event that is fired when the form2 button is clicked, and let form1 hook that event. This way, you can create your own EventArgs derived object and the event will pass whatever you want back to the form1 event handler.

1) Make the button in form2 public and after the form is created, add an event handler in form1 for the button in form2.

2) Make the variable/control in form1 public, pass the form1 object to form2, and let form2 do the work.

Of the three ways, I think you should do the first one.