What I did to make it work:
I made a Refresh button on a toolstrip. I bind the datatable in the Refresh button on the onclick event.
private void tlStripRefresh_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt = clsIngadmin.listallingdetails();
dtgAllIngdetTerminals.DataSource = dt;
}
Then I called the refresh event(tlStripRefresh) of the refresh button where I want to use it.
tlStripRefresh_Click(tlStripRefresh, EventArgs.Empty);