C#

class Node
    {

        public bool[,] state { set; get; }//1
        public Node parent { set; get; }//2
        public List<Node> childs { get; set; }//3
        //6
        public int level { get; set; }
        public int Hfunction()//4
        {
        int res=0;
            return res;
        }
        public void generate_child()//5
        {
            for (int i = 0; i < 4; i++)
            {
               //creat copy of an object then do castting
                bool[,] newstate = (bool[,])this.state.Clone();//8
                Node child = new Node();//7
                childs.Add(child);//add to list
                child.parent = this;//declare to parent
                child.level = this.level + 1;
                newstate[child.level, i] = true;//9
                child.state = newstate;
            }
        
        
        }
        //10
        public bool visited { get; set; }
        public Node GetBestChild()//11
        {

            int Min = int.MaxValue;//max value  12
            int min_index = -1;//out side range of index
            Node BestChild = null;//declare null value for bestchild node
            for (int i = 0; i < 4;i++ )
            {
                int CurrentValue = this.childs[i].Hfunction();
                if (CurrentValue < Min && this.childs[i].visited == false)
                {
                    BestChild = this.childs[min_index];//14
                    BestChild.visited = true;

                    Min = CurrentValue;//13
                    min_index = i;//13

                }


            }
         return BestChild;
        }

    }

class BFS
{
    public Node BfsProcess(Node root)
    {
        Node soultion = null;
        if (root.Hfunction() == 4)
        {

            return root;
        }
        else {
            root.generate_child();
            Node bestchild =null;
            while ((bestchild = root.GetBestChild()) != null)
            {
                soultion = BfsProcess(bestchild);

            }
                    return soultion;
        }

    }

}

string[] lines = File.ReadAllLines(path);
foreach (string s in lines)
   {
   string[] fragments = s.Split(',');
   ...
   }

HttpPostedFile myFile = files.PostedFile;// Get a reference to PostedFile object
     string strFilename = Path.GetFileName(myFile.FileName);
     string[] lines = File.ReadAllLines(strFilename);
     foreach (string s in lines)
     {
         string[] fragments = s.Split(',');

         errors.Text = fragments[0];
         errors.Visible = true;
     }

errors.Text = fragments[0];

sekannak wrote:

I need to add reference the mscorlib dll

sekannak wrote:

instead of i got this error as follows,

"A reference to 'mscorlib' could not be added' this component is automatically added by the project system and cannot be referenced directly".

sekannak wrote:

I need to add reference the mscorlib dll

for (int i = 0; i < zeroFrequencyLetterList.Count && decrypted < 25; i++)
                       {
                           bool flag = true;
                           Random r = new Random();
                           int randomed;
                           do
                           {
                               randomed = r.Next(0, zeroFrequencyLetterList.Count);//<--- here i get almost always '0', no meter how big the ArrayList, almost always it means that one in X executions i get different answer than '0'

                               if (encryptionKey[zeroFrequencyLetterList[randomed]] != ' ')
                                   flag = false;
                               else
                                   flag = true;
                           } while (!flag);

                           encryptionKey[zeroFrequencyLetterList[i]] = abcLetters[randomed];
                           abcLetters.RemoveAt(randomed);
                           zeroFrequencyLetterList.RemoveAt(i);
                           decrypted++;
                       }