private void dataGridView_Categoria_CellClick(object sender, DataGridViewCellEventArgs e)
{
ExibirCategoria nova = new ExibirCategoria(long.Parse(dataGridView_Categoria.Rows[e.RowIndex].Cells["Código"].Value.ToString()));
nova.ShowDialog();
}
private void toolStripButton_Selecionar_Click(object sender, EventArgs e)
{
ExibirCategoria nova = new ExibirCategoria();
nova.Show();
}