Dialog In Ax-2012

static void DialogUsingAddition(Args _args)
{
    Dialog dlg1;
    Dialog dlg2;
    DialogField dlf1;
    DialogField dlf2;
    int a;
    int b;
    int c;
    AirthematicOperatations aithematic;
    ;
    dlg1=new Dialog();
    dlg2=new Dialog();
    dlf1=dlg1.addField("EnterFirstNumber","Please Enter First Number.");
    dlf2=dlg2.addField("EnterSecondNumber","Please Enter Second Number");
    if(dlg1.run())
    {
        a=dlf1.value();
       // info(strFmt("%1",a));
       
    }
    if(dlg2.run())
    {
        b=dlf2.value();
    }
   // c=a+b;
    //info(strFmt("The Addition is:-  %1 ", c));
   
    // Passing these values to Class
   
   //aithematic=new AirthematicOperatations();
   //aithematic.Add(a,b);
   
    if(a < b)
    {
        c=a*b;
        info(strFmt(" A > B Is:- %1 ",c));
    }
    else if(a>b)
    {
        c=a+b;
        info(strFmt("A + B Is :- %1 ", c));
    }
    else if(a == b)
    {
        info(strFmt("Both Values or Equal.."));
    }
}