private void ContactControlDoBack(object sender, EventArgs e)
{
if (_contactControl == null) return;
_contactControl.DoBack -= ContactControlDoBack;
_contactControl.Parent = null;
_contactControl = null;
//show the contact list control
_contactListControl = new ContactListControl
{
Dock = DockStyle.Fill,
Parent = splitContainer.Panel1,
FrmMain = this,
CredentialsDetails = _credentialsDetails
};
_contactListControl.DoShowContactsInList += (ContactListControlDoShowContactsInList);
}