private void LoginToServer()
{
if (txtUsername.Text.Trim() == "")
{
MessageBox.Show(i18n.GetText("FieldBlank", i18n.GetText("labelUsername")), i18n.GetText("invalidusername"), MessageBoxButtons.OK);
}
else
{
client.Username = txtUsername.Text.Trim();
client.ConnectToServer();
}
}