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problems with StackedBar100

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Angelo
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Angelo asked on 14 Aug 2009, 05:49 PM
Hi,

I have a StackedBar100 chart in my report, everything works fine, but the problem is the appereance of the percentage result in the Bar.
For example: If I have a bar divided in two or more... the first value appears in the botton of the second part of bar and the other value appears in the top of the second part of the bar. I'd like to see each value appearing inside the correct bar.
Is that possible??

Another Question: I think this code is not good... maybe there is an easy way to do that with the same result.. isnt there??

Thanks...

Code:


    DataTable GetData()
        {
            DataTable dataTable = new DataTable();
            dataTable.Columns.Add("Descricao", typeof(string));
            dataTable.Columns.Add("Qtd1", typeof(int));
            dataTable.Columns.Add("Qtd2", typeof(int));
            dataTable.Rows.Add(new object[] { "A", 3, 5 });
            dataTable.Rows.Add(new object[] { "B", 2, 5 });
            dataTable.Rows.Add(new object[] { "C", 5, 5 });
            return dataTable;
        }


    private void chart2_NeedDataSource(object sender, EventArgs e)
        {
            try
            {
                DataTable dt = new DataTable();
                dt = GetData();


                Telerik.Reporting.Processing.Chart chart = sender as Telerik.Reporting.Processing.Chart;
                chart2.Series.Clear();
                
                ChartSeries s = null;

                for (int i = 0; i < dt.Columns.Count -1; i++)
                {
                    s = new ChartSeries();
                    s.Type = ChartSeriesType.StackedBar100;
                    s.Appearance.LegendDisplayMode = ChartSeriesLegendDisplayMode.Nothing;
                    s.DefaultLabelValue = "#%";
                    
                    
                    chart2.Series.Add(s);

                    foreach (DataRow row in dt.Rows)
                    {
                        ChartSeriesItem item = new ChartSeriesItem();
                        item.YValue = Convert.ToDouble(row[i+1]);
                        s.AddItem(item);

                    }
                    
                }

                foreach (DataRow row in dt.Rows)
                {
                    s.PlotArea.XAxis.AutoScale = false; //false permite gerar o xaxis com os valores que eu definir
                    s.PlotArea.XAxis.AddItem((string)row["Descricao"]);

                }


            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

2 Answers, 1 is accepted

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Chavdar
Telerik team
answered on 17 Aug 2009, 11:54 AM
Hi Angelo,

To specify the position of the series items labels use the LabelLocation and AlignedPosition properties:

[ChartSeries].Appearance.LabelAppearance.LabelLocation = StyleSeriesItemLabel.ItemLabelLocation.Inside;

[
ChartSeries].Appearance.LabelAppearance.Position.AlignedPosition = AlignedPositions.Center;

The chart can be populated in many different ways depending on the input data. Your approach is not bad and can be little optimized. Here is an updated version:

private void chart1_NeedDataSource(object sender, EventArgs e) 
    { 
        Telerik.Reporting.Processing.Chart chart = (Telerik.Reporting.Processing.Chart)sender; 
        Telerik.Reporting.Chart chartDef = (Telerik.Reporting.Chart)chart.ItemDefinition; 
         
        DataTable dt = new DataTable(); 
        dt = GetData(); 
        chartDef.Series.Clear(); 
 
        for (int i = 1; i < dt.Columns.Count; i++) 
        { 
            Telerik.Reporting.Charting.ChartSeries s = new ChartSeries(); 
            s.Type = ChartSeriesType.StackedBar100; 
            s.Appearance.LegendDisplayMode = ChartSeriesLegendDisplayMode.Nothing; 
            s.DefaultLabelValue = "#%"
            s.Appearance.LabelAppearance.LabelLocation = StyleSeriesItemLabel.ItemLabelLocation.Inside; 
            s.Appearance.LabelAppearance.Position.AlignedPosition = AlignedPositions.Center; 
            chartDef.Series.Add(s); 
 
            foreach (DataRow row in dt.Rows) 
            { 
                ChartSeriesItem item = new ChartSeriesItem(); 
                item.YValue = Convert.ToDouble(row[i]); 
                s.AddItem(item); 
                if (i == 1) // Adding axis items during the population of the first series. 
                { 
                    chartDef.PlotArea.XAxis.AutoScale = false//false permite gerar o xaxis com os valores que eu definir 
                    chartDef.PlotArea.XAxis.AddItem((string)row["Descricao"]); 
                } 
            } 
        } 
    } 




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Chavdar
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Angelo
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answered on 17 Aug 2009, 12:51 PM
thank you...

It's perfect now...

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