filter datagrid by many criteria

Question

Hi :P

I have a datagridview and i want to filter it by many criteria. I have 3 checkboxes. This is my code:

int value=0;


if (checkBox1.Checked == true)
      value = 1;
 else if (checkBox2.Checked == true)
      value = 2;
  else if (checkBox3.Checked == true)
       value = 3;
 switch (value)
            {
                case 1:
                    {
                        dgv.DataSource = dataSet.Tables["client"].DefaultView;
                        dataSet.Tables["client"].DefaultView.RowFilter = "denumire LIKE '%" + textBox1.Text + "%'";
                        break;
                    }
                case 2:
                    {
                        dgv.DataSource = dataSet.Tables["client"].DefaultView;
                        dataSet.Tables["client"].DefaultView.RowFilter = "cuicnp LIKE '%" + textBox2.Text + "%'";
                        break;
                    }
                case 3:
                    {
                        if (comboBox1.SelectedItem.ToString() == "Personal")
                        {
                            dgv.DataSource = dataSet.Tables["client"].DefaultView;
                            dataSet.Tables["client"].DefaultView.RowFilter = "tip_client LIKE 'personal'";
                        }
 } 
 }
Even though i check 2 checkboxes the dgv is filtered by the first criteria, and to be filtered by both Thanks!