Hello Amir,

Thank you for your post. I have been looking into it and the sample you have provided and I modified it, so now it works as you want. Basically I set the StackedColumnSeries’ AutoGenerateSeries Property to True and changed the structure of the DataSource you use. I also put comments in the XAML for your reference. Please let me know if this helps you or you need further assistance on this matter.

Looking forward for your reply.

Hi stephan,

thanks for the sample project it worked brilliantly...and sorry i have to ask the same question as amir, but how do you set the Groupby in codebehind ? because i can see you are using a static resource to call the object instance in xaml of the constructor of the Seriesdata class...which then adds all the datapoints observable collection.

but i have an object in code behind and also will like the option of using it in my view Model later on how would i do this ?

Thanks

Hi Stefan,

here is a clear example

if i am using a codebehind like this (method) one:

 private void FillChart(object sender)
        {
            if (xmDataChart != null)
            {
                ColorsHelper colors = new ColorsHelper();

                foreach (Series s in xmDataChart.Series)
                {
                    AnimatePropertyTo(s, 0, "Opacity", 4);
                }

                //clear the linegrid series
                xmDataChart.Series.Clear();

                //go through whole DataContext and add series
                brushNum = 0;
                XamDataChart dc = (XamDataChart)sender;
                ChartData cData = (ChartData)dc.DataContext;

                int interval = getInterval(cData);

                foreach (ChartDataSeries ds in cData.ChartDataSeries)
                {
                    StackedColumnSeries xmSeries = new StackedColumnSeries();
                   
                    //xmSeries.ValueMemberPath = "Value";
                    #region Working Area
                    var fragment = new StackedFragmentSeries
                                       {
                                           ValueMemberPath = "Value",
                                           Title = ds.SeriesKey
                                       };

                    xmSeries.Series.Add(fragment);

                    //xmSeries.AutoGenerateSeries = true;

                    #endregion

                    xmSeries.Title = ds.SeriesName;
                    xmSeries.Brush = new SolidColorBrush(colors.Series1[brushNum]); ;
                    xmSeries.Style = App.Current.Resources.MergedDictionaries[0]["StackedColumnSeriesStyle"] as Style;
                    ToolTip newtooltip = new ToolTip();
                    newtooltip.Style = App.Current.Resources.MergedDictionaries[0]["ToolTipStyle"] as Style;
                    xmSeries.ToolTip = newtooltip;
                    xmSeries.XAxis = (CategoryXAxis)xmDataChart.Axes[0];
                    xmSeries.YAxis = (NumericYAxis)xmDataChart.Axes[1];
                    xmSeries.YAxis.Interval = interval;
                    xmSeries.ItemsSource = ds.ChartDataPoints;
                    xmSeries.Legend = TitleLegend;
                    xmDataChart.Series.Add(xmSeries);

                    AnimatePropertyTo(xmSeries, fullOpacityVal, "Opacity", 3);

                    brushNum++;
                }
            }
        }

 then how do i get my ' group by' to work ?

Hello,

I have modified the sample I sent you before, so now the GroupBy is created in code behind instead of in XAML.

Hope this helps you.

Hi Stefan

what does the value { } { Key } mean in

<CategoryXAxis name=xmaxis  Label="{ } {Key}" />

 i have never seen this expression .Other than it setting the x-axis in a CategoryXAxis element

can you explain ?  

Hello,

The Label Property of the CategoryXAxis is for formatting the Axis' Labels, like the Format Property of an Editor for example. The "{}" are for escaping, when you set this Property in XAML. If you want to set it in code behind you should set it to "{Key}" only. Also if there is a Property from the underlying object that is set as ItemsSource, its will be mapped to it (like Binding) and the corsonding Values will be showed.

Hope this helps you. 

Hello,

I will answer to your other post as soon as possible