Thank you. can you make an example instead of using observablecollection. could you please use DataTable instead?
with regards to the sfdatagrid. I noticed that it has been created thru
ObservableCollection data = new ObservableCollection();
Random random = new Random();
data.Add(new DataGridData("Mark", "Zed", "Apple", "Red"));
data.Add(new DataGridData("Mark", "Zed", "Apple", "Red"));
data.Add(new DataGridData("Joesph", "Claire", "Orange", "Orange"));
data.Add(new DataGridData("Luck", "Mark", "Graps", "Green"));
sfDataGrid.DataSource = data;
at the moment sfdatagrid have been generated thru
DataTable table = new DataTable();
DataColumn colcreatedby = table.Columns.Add("Created By", typeof(string));
DataColumn colmodifiedby = table.Columns.Add("Modified By", typeof(string));
DataColumn colitem = table.Columns.Add("Item", typeof(string));
DataColumn colparameter = table.Columns.Add("Parameter", typeof(string));
when I call my form to display my chart I got an error (null values) at series.Points.Add(record.createdby, 1) and a null value at var record = (item as RecordEntry).Data as DataGridData;
using your example,
public graph(RecordsList data)
{
// _format = format;
InitializeComponent();
ChartSeries series = new ChartSeries("Line Series", ChartSeriesType.Pie);
foreach (var item in data)
{
var record = (item as RecordEntry).Data as DataGridData;
var pointsCount = series.Points.Count;
if (series.Points.Count == 0)
{
series.Points.Add(record.createdby, 1);
}
