title: Adding rows to Strong Typed Dataset with relation
body: <p>Hello got typed Dataset named DSMain.</p>
  
  <p>Tables  </p>
  
  <blockquote>
    <p>User:<br>
              U_id int 
              U_fname string
              U_lname string          U_Case int</p>
    
    <p>Case:<br>
          C_id int        C_date string           C_status int</p>
  </blockquote>
  
  <p>U_Case is in relation with C_Status,</p>
  
  <p>I want to add data to this table.</p>
  
  <blockquote>
    <p>public static void
    AddNewDluznik(string fname, string
    lname, int case)
            {
                MainData.User.AddUserRow(fname, lname,
    case);
            }</p>
  </blockquote>
  
  <p>Without rel it works.</p>
  
  <p>Argument '3': cannot convert from 'int' to 'Zefir.DSMain.CaseRow'.</p>