Chart Update after created and linked datasource

Question

Hallo

I'm trying to find a way to update the chart after the a list of Objects was binded with the chart. (Simple explanation below).

Chart is created once the form is loaded, and got a tick event that should update the data every couple of seconds.

public frmMainView()
{
InitializeComponent();
timer1.Start();
timer2.Start();
timer2.Interval = 2000;
UpdateUserScanRatesHourlyDaily();
CreateCharts();
UpdateCharts();
}

private void timer2_Tick(object sender, EventArgs e)
{
UpdateUserScanRatesHourlyDaily();
UpdateCharts();
}

 private void CreateCharts()  
        {  
            charHourlyPacks.DataSource = _scannerPerformanceModel;  
            Series S1 = new Series();  
            S1.XValueMember = "UserName";  
            S1.YValueMembers = "HuPackedDay";  
            charHourlyPacks.Series.Add(S1);  
        }  
        private void UpdateCharts()  
        {  
            charHourlyPacks.Series.ResumeUpdates(); //This is not updating the chart.  
            //charHourlyPacks.Update();  
        }      

Answer 1

Hi jacques labuschagne,
I have provided a solution in another thread with same problem, and you can update the chart via DataBind method.
Here is a code example:

public Form1()  
{  
    InitializeComponent();  
    timer1.Start();  
    CreateCharts();  
    timer2.Start();  
    timer2.Interval = 2000;  
}  
private void timer2_Tick(object sender, EventArgs e)  
{  
    UpdateUserScanRatesHourlyDaily();  
    UpdateCharts();  
}  
List<Scanner> MyList = new List<Scanner>();  
private void CreateCharts()  
{  
    Series s = new Series();  
    s.XValueMember = "UserName";  
    s.YValueMembers = "HuPackedDay";  
    MyList.Add(new Scanner("A",1));  
    MyList.Add(new Scanner("D", 2));  
    MyList.Add(new Scanner("F", 3));  
    chart1.DataSource = MyList;  
    chart1.Series.Add(s);  
    chart1.DataBind();  
}  
int i = 1;  
private void UpdateUserScanRatesHourlyDaily()  
{  
    var found = MyList.FirstOrDefault(c => c.HuPackedDay == i);  
    found.HuPackedDay =i+1;   
    i++;  
}  
private void UpdateCharts()  
{  
    chart1.DataBind();  
}  
  
  
public class Scanner  
{  
    String username;  
    int huPackedDay=0;  
  
    public string UserName  
    {  
        get { return username; }  
        set { username = value; }  
    }  
  
    public int HuPackedDay  
    {  
        get { return huPackedDay; }  
        set { huPackedDay = value;  }  
    }  
    public Scanner(string un, int h)  
    { UserName = un; HuPackedDay = h; }  
  
}  

Best Regards,
Daniel Zhang

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