Generate sum fixed variable range random number

Private voidtesttest () {intMaxValue =10000; Random Rd=NewRandom (Guid.NewGuid ().            GetHashCode ()); intAvg = Convert.ToInt32 ( This. Txtavg.text);//;//Average            intRange = Convert.ToInt32 ( This. Txtfiled.text);//;//Up and down fluctuation value ten            intTotalrandomvalue =0; List<Double> list =Newlist<Double>();  Do            {                inttmp = Rd. Next (Range)-Ten+avg; //int tmp = Rd. Next (range) + avg;List. ADD (Double) TMP/ -); Totalrandomvalue+=tmp; TMP= MaxValue-Totalrandomvalue; if(TMP <= AVG +range) {list. ADD (Double) TMP/ -);//TODO: Too big or too small fix not write, too troublesome                     Break; }            }             while(true); List. ForEach ((d)=            {                 This. LISTBOX1.ITEMS.ADD (D.tostring ());            });  This. button1. Text = list. Sum (). ToString () +"-Total number of records:"+list.        Count.tostring (); }

Generate sum fixed variable range random number