how to add only 2 gridlines in a barchart

Hi,

I have created a bar graph in the PDF document. I want to show only two gridlines one after 25th position and another after 75th position but I am unable to draw the gridlines as it is drawn after a fixed interval like(0,25,50,75,100). but I need gridlines to appear only for 25 and 75. Please assist.

Hello,

It is not possible to apply grid lines only for the specified intervals (at 25th and 75th position) on X and Y axis using DynamicPDF Generator for .NET product.  You can add the major grid lines for all the X and Y axis values or set the interval for the grid line and below is the code for it.

            // Create a PDF Document
            Document document = new Document();
            // Create a Page and add it to the document
            Page page = new Page();
            document.Pages.Add(page);
            // Create a chart
            Chart chart = new Chart(0, 0, 400, 230);
            // Create a plot area
            PlotArea plotArea = chart.PrimaryPlotArea;
            // Create header titles and add it to the chart
            Title title1 = new Title("Website Visitors");
            Title title2 = new Title("Year 2007");
            chart.HeaderTitles.Add(title1);
            chart.HeaderTitles.Add(title2);
            // Create a indexed bar series and add values to it
            IndexedBarSeries barSeries1 = new IndexedBarSeries("Website A");
            barSeries1.Values.Add(new float[] { 5, 7, 9, 6 });
            IndexedBarSeries barSeries2 = new IndexedBarSeries("Website B");
            barSeries2.Values.Add(new float[] { 4, 2, 5, 8 });
            IndexedBarSeries barSeries3 = new IndexedBarSeries("Website C");
            barSeries3.Values.Add(new float[] { 2, 4, 6, 9 });
            // Add indexed bar series to the plot area
            plotArea.Series.Add(barSeries1);
            plotArea.Series.Add(barSeries2);
            plotArea.Series.Add(barSeries3);
            // Create a title and add it to the xaxis
            Title lTitle = new Title("Visitors (in millions)");
            barSeries1.XAxis.Titles.Add(lTitle);
            //Adding grid lines by specifying the intervals.
            XAxisGridLines xGridLines = new XAxisGridLines(2);
            barSeries1.XAxis.MajorGridLines = xGridLines;
            //Adding AxisLabels to the yAxis
            barSeries1.YAxis.Labels.Add(new IndexedYAxisLabel("Q1", 0));
            barSeries1.YAxis.Labels.Add(new IndexedYAxisLabel("Q2", 1));
            barSeries1.YAxis.Labels.Add(new IndexedYAxisLabel("Q3", 2));
            barSeries1.YAxis.Labels.Add(new IndexedYAxisLabel("Q4", 3));
            // Add the chart to the page
            page.Elements.Add(chart);
            // Save the PDF
            document.Draw(@"C:/Temp/MyDocument.pdf");

Thanks,
ceTe Software Support Team.

Thanks for the code sample. I have already seen this code in the example documents but this is not my requirement.

Hello,

It is not possible to add only two grid lines on either X or Y axis on bar chart using DynamicPDF Generator for .NET API. The DynamicPDF API will add grid lines for all X or Y Axis values or at specified intervals.

Thanks,
ceTe Software Support Team.