Enable button from one form to another form

Question

2.67/5 (3 votes)

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hi,
i have a button in form1, initially in form1_load() i disabled that button. At the end of the certain operations which was done in form2, i need to enable the button in form1.
How to do this?

I created object for form1 and tried to enables it, in form2 like..

form2_load()
{
...
...
Form1 a=new Form1();
a.button1.enable=true;
}

But it not works.

Posted 24-May-11 3:30am

J.Karthick

Updated 24-May-11 6:07am

thatraja

v2

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Comments

Sandeep Mewara 24-May-11 9:37am

Hint: You are creating a new instance of form1 instead of using the existing one by doing:
Form1 a=new Form1();

4 solutions

Solution 3

Hi,

1. Add new constructor in Form2 and add parameter of Form1.

From1 frm1;
public Form2()
{}
public Form2(Form1 refOfForm1)
{
  frm1 = refOfForm1;
}

2. Pass parameter of Form1 and show Form2 from Form1.

  private void showform2_click(Object sender,EventArgs e)
  {
    Form2 f2 = new Form2(this);
f2.show();
  }

3. Call any method of Form1 from Form2 using 'frm1' object.

private void enableBtnInForm1()
{
  frm1.EnableBtn();
}

Posted 24-May-11 4:23am

@nand Chapla

Updated 24-May-11 6:06am

v2

Comments

Sergey Alexandrovich Kryukov 24-May-11 16:37pm

Not the most robust one.
Please see my answer.
--SA

Sergey Alexandrovich Kryukov 23-Jun-14 2:26am

Did you see my answer? Please, if this is not enough, comment on my question. If it is needed, I'll post more detailed answer, with such sample.
—SA

Solution 4

This is a popular question. The most robust way of form cooperation is implementing some interface in the form class.

Please see my past answer here, see also other solutions and the discussion:
How to copy all the items between listboxes in two forms[^].

—SA

Posted 24-May-11 10:35am

Sergey Alexandrovich Kryukov

Comments

sairam.bhat 25-May-11 2:21am

ya sir my +5

sairam.bhat 25-May-11 2:22am

my +5

Sergey Alexandrovich Kryukov 25-May-11 2:51am

Thank you very much.
--SA

Solution 1

Answered only to move it from the Unanswered list: OP found solution.

Posted 24-May-11 3:43am

OriginalGriff

Comments

Sergey Alexandrovich Kryukov 24-May-11 16:37pm

Not the best one.
Please see my answer.
--SA

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J.Karthick · Accepted Answer · 2011-05-24T04:01:00

Solution 2

yes...i got a solution

http://www.codeproject.com/Questions/119349/how-to-enable-the-buttons-which-are-in-parent-form.aspx

Posted 24-May-11 4:01am

J.Karthick

Comments

Sergey Alexandrovich Kryukov 24-May-11 16:36pm

May be not the best one. Please see the most comprehensive way I describe in my answer (referenced).
--SA