private void textBox1_TextChanged(object sender, EventArgs e)
        {
            DataSet ds;

            if (radioButton1.Checked)
            {
                ds = BA.buscarAsesor(textBox1.Text, "", Login.Carrera, carg);
                if (ds != null)
                {
                    dataGridView1.DataSource = ds.Tables[0];
                }
            }
            else if (radioButton2.Checked)
            {
                ds = BA.buscarAsesor("", textBox1.Text, Login.Carrera, carg);
                if (ds != null)
                {
                    dataGridView1.DataSource = ds.Tables[0];
                }
            }
        }