Website Login Simple Verification Code

1   Public stringBindcode (intlength)2         {3             stringVchar ="1,2,3,4,5,6,7,8,9,a,b,c,d,e,f,g,h,i,j,k,l,m,n,p,q,r,s,t,u,v,w,x,y,z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,p,q,r,s,t , U,v,w,x,y,z";4 5             string[] Vcarray = Vchar.split (NewChar[] {',' });         8Random Rand =NewRandom (); Ten             One             intA; Alist<int> result =Newlist<int>(); -             stringNumlist =string. Empty; -  the              for(inti =1; I < length +1; i++) -  -             { -A = rand. Next (1, vcarray.length);//set the range. I'm here to fetch data from the database 1~n +                 if(result.) Contains (a)) -                 { +i = i-1;//duplicate values, repeat again, cycle times minus one time A                 } at                 Else -                 { -Numlist + = Vcarray[a];//no duplicate values are added within the collection -                 } -             } -           in             returnnumlist;  -}

Call:

1  protected void Page_Load (object  sender, EventArgs e)2        {3             if (!  IsPostBack)4            {5                 barcoded.text = Bindcode (4); 6             }7         }

Website Login Simple Verification Code