C# how do I pass text from one datagridview form to another form when both forms are open

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I have two forms which are both open. I want to send a datagridview cell value from form 1 (already open) to form 2 (already ope. (I don't want to pass text on form load, but after some edits on the already open form). I've searched the web for days but I can't find one for already open forms. (Only those containing form.show() property).

What I have tried:

private void button_click(object sender, EventArgs e)
{
Form 1 form = new Form1();
form.lblName.text = txtName.text;
}

Posted 27-Jan-19 2:37am

Robert S4r

Updated 27-Jan-19 2:38am

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[no name] 27-Jan-19 8:45am

You are creating a new (temporary) Form1 form in this method so it will be destroyed as soon as the method returns.

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OriginalGriff · Accepted Answer · 2019-01-27T02:39:00

Exactly how depends on the "relationship" between the two forms.
Have a look at these, one of them will fit your circumstances.
The form that creates an instance of another:

C#

MyForm mf = new MyForm();
mf.Show();

Is the "parent", the other form is the "child".
(This doesn't imply any formal MDI relationship)

Transferring information between two forms, Part 1: Parent to Child[^]
Transferring information between two forms, Part 2: Child to Parent[^]
Transferring information between two forms, Part 3: Child to Child[^]