Combobox value to database sql

Hello,

I am trying to pass combobox value to a database, using a 3 tier business logic. Currently my form page looks like this:

privatevoidSavebtn_Click(object sender,EventArgs e){try{SaveRole(tbroledesc.Text,/*combobox selected item gets passed here*/);MessageBox.Show("Club role saved successfully");}catch(Exception er){MessageBox.Show(er.Message.ToString());}}publicvoidSaveRole(stringRoleDesc,/*combobox selecteditem*/){ClubRoles cr =newClubRoles();RoleCreatedBy=Convert.ToInt32(lstcreatedby.SelectedItem);

            cr.insertingclubroles(RoleDesc,RoleCreatedBy);

            gettingclubroles();//refresh the list   }

How can I pass what ever is selected in the combobox drop down as the parameter?

I am filling the combobox like this:

privatevoid loadclient(){DataSet dsloadclient;
            dsloadclient =newClubRoles().createdby();//need fix duplicate valuesDataTable dt = dsloadclient.Tables[0].DefaultView.ToTable(true,"ClientName","ClientId");
            lstcreatedby.DataSource= dt;
            lstcreatedby.DisplayMember="ClientName";
            lstcreatedby.ValueMember="ClientId";}

Any help will be appreciated.

Thanks.