private bool FillBoardWithData(StreamReader inData,Board inBoard)
 {
     int number;
     for(int i=0;i<9;++i)
         for(int j=0;j<9;++j)
         {
             number = ReadNextDigit(inData);
             if(number != Board.EMPTY_CELL_VALUE)
                 inBoard.Set(i,j,number);
         }
     return true;
 }
 void AddNumber(TextBox inTextBox,Board inBoard)
 {
     if(inTextBox.Text.Length == 1)
     {
         try
         {
             int tagNumber = Int32.Parse((string)(inTextBox.Tag));
             inBoard.Set(tagNumber / 9, tagNumber % 9,Int32.Parse(inTextBox.Text));
         }
         catch(Exception)
         {
         }
     }
 }