how to find MS-SQL records corresponding to a binary string

Question

how to read records from MS-SQL -corresponding to a binary string- to generic collection , suppose that our string is "10100" , corresponding records would be the 0-th, and second rows in table ("Operation" for example). one amateur (and of course incomplete) answer could be :

   
   public ICollection<Operation> GetAllowedOperations(string accessString)  
   {     
       PanelModel dbContext=new PanelModel();   
       var operationArray = dbContext.Operations.ToArray();//load from db to array       
       char[] accessArray = accessString.ToCharArray();//convert string to array       
        for (int i = 0; i <=accessArray.Count(); i++)//remove corresponding to 0       
            {    
              if(accessArray[i].Equals('0'))          
                  {     
                     operationArray[i] = null; 
                  }  
            }                   
            //assign array to a generic collection for future computation  what is an appropriate solution ,