private void clienteToolStripMenuItem_Click(object sender, EventArgs e)
{
ConsultarCliente consultarCliente = new ConsultarCliente();
consultarCliente.MdiParent = this;
consultarCliente.Show();
}
private void btnConsultar_Click(object sender, EventArgs e)
{
ConsultarCliente consultarCliente = new ConsultarCliente();
this.Visible = false;
consultarCliente.Show();
}