private async void Administradoras_Click(object sender, RoutedEventArgs e)
{
dt = new DataTable();
EnviarForm.Visibility = Visibility.Collapsed;
dtGrid.Visibility = Visibility.Visible;
UsuarioService usuarioService = new UsuarioService();
List <Administradora> administradoraList = new List <Administradora>();
administradoraList = await usuarioService.AdministradoraListar();
DataColumn nome = new DataColumn("Nome", typeof(string));
dt.Columns.Add(nome);
foreach (var item in administradoraList)
{
DataRow row = dt.NewRow();
row[0] = item.NomeAdministradora;
dt.Rows.Add(row);
}
dtGrid.ItemsSource = dt.DefaultView;
}