Question

I have a form A with a button called btnA and a datagrid.
When I click on this button, another form B opens which has a button btnB. When I click on btnB, I need to close form B and refresh form A. How do I achieve this?

Thanks.

Answer 1

When you create FormB, pass a reference to FormA

class FormB : Form
{
    FormB(FormA parent)
    { 
        this.Parent = parent;
    }
    ...

    protected void btnB_Click(object sender, EventArgs e)
    {
       parent.RefreshGrid();
       this.Close();
    }
}

and then on butB click, you can close formB and access formA to refresh it.