Question

I have an array of my x values for my chart and a Linq to Entity LIST that contains my y values. How do I access my list to add their values to the chart. this is what I have so far:

                //Get restaurant name & count of votes for each restaurant
                BL.BLaddVote obj1 = new BLaddVote();
                var votesList = obj1.countVotes();

                //Set chart x & y values:  here is where I'm stuck
                chtVotes.Series[0].Points.Add(<X VALUES>, <Y VALUES>);

How do I get the values from my anonlymous list into my chart? Thanks in advance.

Additionally, here is the query to pull the data:

    public class NumVotesInfo
    {
        public string RestName { get; set; }
        public int NumVotes { get; set; }
    }

    public IEnumerable<NumVotesInfo> countVotes()
    {
        //Return the count of the number of reviews for a specific restaurant ID
        var NumVotes = from VOTE in db.VOTEs
                         group VOTE by VOTE.VOTE_VALUE into t
                         select new NumVotesInfo { RestName = t.Key, NumVotes = t.Count() };

        return NumVotes.ToList();
    }

Answer 1

Seems like you want to merge the list of X values and the list of Y values:

var pointList = myXValues.Zip(votesList, (a,b) => new { X = a, Y = b.NumVotes });

Now you have X and Y properties in your pointList and can use it for charting:

foreach(var point in pointList)
    chtVotes.Series[0].Points.Add(point.X, point.Y);

Alternatively, assuming still that both lists have the same length you can just use the index. This would require countVotes() to return a list not an IEnumerable, you can create the list by using ToList():

var votesList = obj1.countVotes().ToList();

Now you can just use the index:

for(int i = 0; i< votesList.Count, i++)
{
      chtVotes.Series[0].Points.Add(myXValues[i], votesList[i].NumVotes);
}