protected void cboGrpSanguineo_SelectedIndexChanged(object sender, EventArgs e) { gvPaciente.DataSource = objClienteBL.ListarPacienteTSangre(cboGrpSanguineo.SelectedValue.ToString()); gvPaciente.DataBind(); gvEmpleados.DataSource = null; gvEmpleados.DataBind(); gvCitas.DataSource = null; gvCitas.DataBind(); }