Question

This is what I am trying to do:

chart1.Series["ser1"].Points.AddY(database1DataSet.DataTable1.MyColumn);

However:
Series data points do not support values of type System.Data.DataColumn only values of these types can be used: Double, Decimal, Single, int, long, uint, ulong, String, DateTime, short, ushort.

How do I convert to these types from a dataset. Forgive me if this is obvious, just started learning.

Answer 1

If you have a large datatable I would iterate through the rows as follows and add the points to your chart in the loop (i.e. there is no way to add the whole column as you have tried to do….each point has to be added seperately)

        using (var reader = database1DataSet.DataTable1.CreateDataReader())
        {
            int colOrdinal = database1DataSet.DataTable1.Columns["YourColumnName"].Ordinal
            while (reader.Read())
            {
                chart1.Series["ser1"].Points.AddY(reader.GetInt32(colOrdinal));
            }
        }