Change the color of each Bar in 1 series

[ghoff12]

There is only 1 series in my chart. However, i went each bar to be a different color. How can i do this?

[Simon.yang]

Hello,

Thanks for your inquiry. Please refer to the below code snippet to change the color of each Bar.

Code: Select all

            Presentation ppt = new Presentation();
            ppt.LoadFromFile(@"sample.pptx");
            IChart chart = ppt.Slides[0].Shapes[0] as IChart;

            //set 1st bar as red
            ChartDataPoint cdp0 = new ChartDataPoint(chart.Series[0]);
            cdp0.Index = 0;
            cdp0.Fill.FillType = FillFormatType.Solid;
            cdp0.Fill.SolidColor.KnownColor = KnownColors.Red;
            chart.Series[0].DataPoints.Add(cdp0);

            //set 2nd bar as yellow
            ChartDataPoint cdp1 = new ChartDataPoint(chart.Series[0]);
            cdp1.Index = 1;
            cdp1.Fill.FillType = FillFormatType.Solid;
            cdp1.Fill.SolidColor.KnownColor = KnownColors.Yellow;
            chart.Series[0].DataPoints.Add(cdp1);

            //set 3rd bar as blue
            ChartDataPoint cdp2 = new ChartDataPoint(chart.Series[0]);
            cdp2.Index = 2;
            cdp2.Fill.FillType = FillFormatType.Solid;
            cdp2.Fill.SolidColor.KnownColor = KnownColors.Blue;
            chart.Series[0].DataPoints.Add(cdp2);

            ppt.SaveToFile("Accessdatapoint.pptx", FileFormat.Pptx2010);

Best regards,
Simon
E-iceblue support team

[ghoff12]

That worked, and i did something similar for a chart that has multiple categories and series. However, the legend doesn't reflect the colors. How can i change the colors in the legend.


this is how i modified the colors for each bar

Code: Select all

foreach (var cat in chart.Categories)
            {
                int seriesCnt = 0;
                foreach (var ser in chart.Series)
                {
                    ChartDataPoint cdp = new ChartDataPoint(chart.Series[seriesCnt]);
                    cdp.Index = catCnt;
                    cdp.Fill.FillType = FillFormatType.Solid;
                    cdp.Fill.SolidColor.Color = System.Drawing.ColorTranslator.FromHtml("#" + StdColors[seriesCnt].ToString());
                    chart.Series[seriesCnt].DataPoints.Add(cdp);
                    seriesCnt++;
                }
                catCnt++;
            }




[Simon.yang]

Hello,

Thanks for your feedback. When there is a chart that has multiple categories and series, you just need to set colors to the series like below and the legends will automatically reflect the colors.

Code: Select all

            Presentation ppt = new Presentation();
            ppt.LoadFromFile(@"chart.pptx");
            IChart chart = ppt.Slides[0].Shapes[0] as IChart;
            chart.Series[0].Fill.SolidColor.Color = System.Drawing.Color.Red;

Best regards,
Simon
E-iceblue support team

[ghoff12]

Thank you! That worked.

[Simon.yang]

Hello,

Thanks for your feedback. Welcome to write to us if there is any other query.

Best regards,
Simon
E-iceblue support team