private void buttonEdit_Click(object sender, EventArgs e)
{
if (listViewAgents.SelectedItems.Count == 1)
{
AgentsSet agentsSet = listViewAgents.SelectedItems[0].Tag as AgentsSet;
agentsSet.FirstName = textBoxFirstName.Text;
agentsSet.MiddleName = textBoxMiddleName.Text;
agentsSet.LastName = textBoxLastName.Text;
agentsSet.PhoneNumber = textBoxPhone.Text;
agentsSet.Position = comboBoxPosition.Text;
Program.wftDb.SaveChanges();
ShowAgent();
}
}