Export Data Visualization in MVC Environment

public class HomeController : Controller
{
    public IActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public IActionResult Export(string writerFormat)
    {
        string fileName = null;
        WriterFormat format;

        string reportPath = Server.MapPath(@"~\App_Data\Resources\product-line-sales.rdl");
        FileStream reportStream = new FileStream(reportPath, FileMode.Open, FileAccess.Read);
        BoldReports.Writer.ReportWriter writer = new BoldReports.Writer.ReportWriter();

        // Puppeteer Option to export the data visualization report items.
        writer.ExportResources.BrowserType = ExportResources.BrowserTypes.External;
        writer.ExportResources.ResourcePath = Server.MapPath(@"\App_Data\Puppeteer\");
        // Initialize the class for puppeteer
        writer.ExportSettings = new CustomBrowserType(writer.ExportResources.ResourcePath);

        writer.ExportResources.Scripts = new List<string>
        {
            //Report Viewer component dependent script
            $"https://cdn.boldreports.com/12.1.12/scripts/common/ej2-base.min.js",
            $"https://cdn.boldreports.com/12.1.12/scripts/common/ej2-data.min.js",
            $"https://cdn.boldreports.com/12.1.12/scripts/common/ej2-pdf-export.min.js",
            $"https://cdn.boldreports.com/12.1.12/scripts/common/ej2-svg-base.min.js",
            $"https://cdn.boldreports.com/12.1.12/scripts/data-visualization/ej2-lineargauge.min.js",
            $"https://cdn.boldreports.com/12.1.12/scripts/data-visualization/ej2-circulargauge.min.js",
            $"https://cdn.boldreports.com/12.1.12/scripts/common/bold.reports.common.min.js",
            $"https://cdn.boldreports.com/12.1.12/scripts/common/bold.reports.widgets.min.js",
            $"https://cdn.boldreports.com/12.1.12/scripts/data-visualization/ej.chart.min.js",
             //Report Viewer Script
            $"https://cdn.boldreports.com/12.1.12/scripts/bold.report-viewer.min.js",
        };
        writer.ExportResources.DependentScripts = new List<string>
        {
            "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"
        };

        if (writerFormat == "PDF")
        {
            fileName = "ProductLineSales.pdf";
            format = WriterFormat.PDF;
        }
        else if (writerFormat == "Word")
        {
            fileName = "ProductLineSales.docx";
            format = WriterFormat.Word;
        }
        else if (writerFormat == "CSV")
        {
            fileName = "ProductLineSales.CSV";
            format = WriterFormat.CSV;
        }
        else
        {
            fileName = "ProductLineSales.xlsx";
            format = WriterFormat.Excel;
        }

        writer.LoadReport(reportStream);
        MemoryStream memoryStream = new MemoryStream();
        writer.Save(memoryStream, format);
        // Download the generated document from client.
        memoryStream.Position = 0;
        FileStreamResult fileStreamResult = new FileStreamResult(memoryStream, "application/pdf");
        fileStreamResult.FileDownloadName = fileName;
        return fileStreamResult;
    }

    // Add the class to override the method for puppeteer
    public class CustomBrowserType : ExportSettings
    {
        private string puppeteerPath;

        public CustomBrowserType(string path)
        {
            puppeteerPath = path;
        }
        // Can be used to rendered html data visualization from the given url and convert the image to base 64 string by using external browser
        public override string GetImageFromHTML(string url)
        {
            return LaunchPuppeteer(url).Result;
        }
        // Can be used to convert the image from Puppeteer
        public async Task<string> LaunchPuppeteer(string url)
        {
        // Assigned the chrome.exe path to the puppeteer
            await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true, ExecutablePath =  puppeteerPath + @"chrome-win/chrome.exe"});
            await using var page = await browser.NewPageAsync();
            await page.GoToAsync(url);
            return await page.WaitForSelectorAsync("#imagejsonData").Result.GetPropertyAsync("innerText").Result.JsonValueAsync<string>();
        }
    }
}

> Note: Puppeteer, a headless Chrome automation tool, is currently functioning only for EJ1 scripts.

public class HomeController : Controller
{
    public IActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public IActionResult Export(string writerFormat)
    {
        string fileName = null;
        WriterFormat format;
        string reportPath = Server.MapPath(@"~\App_Data\Resources\OrdersAnalysis.rdl");
        FileStream reportStream = new FileStream(reportPath, FileMode.Open, FileAccess.Read);
        BoldReports.Writer.ReportWriter writer = new BoldReports.Writer.ReportWriter();

        writer.ExportResources.BrowserType = ExportResources.BrowserTypes.External;
        string chromeDriverPath = Server.MapPath(@"~\App_Data\Selenium\");
        string chromeExePath = Server.MapPath(@"~\App_Data\Selenium\chrome-win\chrome.exe");
        writer.ExportResources.ResourcePath = Server.MapPath(@"\App_Data\Selenium\chrome-win");

        writer.ExportSettings = new CustomExportSettings(chromeDriverPath, chromeExePath);

        writer.ExportResources.Scripts = new List<string>
        {
            //Report Viewer component dependent script
        "https://cdn.boldreports.com/12.1.12/scripts/v2.0/common/bold.reports.common.min.js",
        "https://cdn.boldreports.com/12.1.12/scripts/v2.0/common/bold.reports.widgets.min.js",
            //Report Viewer Script
        "https://cdn.boldreports.com/12.1.12/scripts/v2.0/bold.report-viewer.min.js"
        };
        writer.ExportResources.DependentScripts = new List<string>
        {
        "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"
        };

        if (writerFormat == "PDF")
        {
            fileName = "ProductLineSales.pdf";
            format = WriterFormat.PDF;
        }
        else if (writerFormat == "Word")
        {
            fileName = "ProductLineSales.docx";
            format = WriterFormat.Word;
        }
        else if (writerFormat == "CSV")
        {
            fileName = "ProductLineSales.CSV";
            format = WriterFormat.CSV;
        }
        else
        {
            fileName = "ProductLineSales.xlsx";
            format = WriterFormat.Excel;
        }

        writer.LoadReport(reportStream);
        MemoryStream memoryStream = new MemoryStream();
        writer.Save(memoryStream, format);
        // Download the generated document from client.
        memoryStream.Position = 0;
        FileStreamResult fileStreamResult = new FileStreamResult(memoryStream, "application/pdf");
        fileStreamResult.FileDownloadName = fileName;
        return fileStreamResult;
    }
}

public class CustomExportSettings : ExportSettings
{
    private readonly string _chromeDriverPath;
    private readonly string _chromeBinaryPath;

    public CustomExportSettings(string chromeDriverPath, string chromeBinaryPath)
    {
        _chromeDriverPath = chromeDriverPath;
        _chromeBinaryPath = chromeBinaryPath;
    }

    public override string GetImageFromHTML(string url)
    {
        Console.WriteLine(">>> GetImageFromHTML called with URL: " + url);

        ChromeOptions options = new ChromeOptions();
        options.AddArgument("--headless");
        options.AddArgument("--disable-gpu");
        options.AddArgument("--no-sandbox");
        options.AddArgument("--window-size=1920,1080");

        if (!string.IsNullOrWhiteSpace(_chromeBinaryPath))
        {
            options.BinaryLocation = _chromeBinaryPath;
        }

        ChromeDriverService service = ChromeDriverService.CreateDefaultService(_chromeDriverPath);
        service.SuppressInitialDiagnosticInformation = true;
        service.HideCommandPromptWindow = true;

        try
        {
            using (var driver = new ChromeDriver(service, options, TimeSpan.FromSeconds(60)))
            {
                driver.Navigate().GoToUrl(url);

                WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(30));
                wait.Until(d =>
                {
                    var readyState = ((IJavaScriptExecutor)d).ExecuteScript("return document.readyState").ToString();
                    return readyState == "complete";
                });

                // Wait for the chart or canvas to render completely
                System.Threading.Thread.Sleep(3000); // Optional: adjust if needed
                var imageDataElement = driver.FindElement(By.Id("imagejsonData"));
                var base64Image = imageDataElement?.Text;

                if (string.IsNullOrWhiteSpace(base64Image))
                    throw new InvalidOperationException("No base64 image data found.");

                return base64Image;
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(">>> Error in GetImageFromHTML: " + ex.Message);
            throw new ApplicationException("Failed to render chart image via ChromeDriver.", ex);
        }
    }
}

public class HomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Export(string writerFormat)
    {
        // Here, we have loaded the sample report from application the folder App_Data.
        FileStream reportStream = new FileStream(Server.MapPath(@"\App_Data\Resources\sales-order-details.rdl"), FileMode.Open, FileAccess.Read);
        BoldReports.Writer.ReportWriter writer = new BoldReports.Writer.ReportWriter();
        string fileName = null;
        WriterFormat format;
        string type = null;

        // PhantomJS Option to export the data visualization report items.
        writer.ExportResources.UsePhantomJS = true;
        // Set the IncludeText property to true, when text not displayed in the data visualization images.
        writer.ExportResources.IncludeText = true;
        writer.ExportResources.PhantomJSPath = Server.MapPath(@"\App_Data\PhantomJS\");

        writer.ExportResources.Scripts = new List<string>
        {
           //Report Viewer component dependent script
            "https://cdn.boldreports.com/12.1.12/scripts/v2.0/common/bold.reports.common.min.js",
            "https://cdn.boldreports.com/12.1.12/scripts/v2.0/common/bold.reports.widgets.min.js",
             //Report Viewer Script
            "https://cdn.boldreports.com/12.1.12/scripts/v2.0/bold.report-viewer.min.js"
        };
        writer.ExportResources.DependentScripts = new List<string>
        {
            "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"
        };

        if (writerFormat == "PDF")
        {
            fileName = "sales-order-detail.pdf";
            format = WriterFormat.PDF;
        }
        else if (writerFormat == "Word")
        {
            fileName = "sales-order-detail.docx";
            format = WriterFormat.Word;
        }
        else if (writerFormat == "CSV")
        {
            fileName = "sales-order-detail.CSV";
            format = WriterFormat.CSV;
        }
        else
        {
            fileName = "sales-order-detail.xlsx";
            format = WriterFormat.Excel;
        }

        writer.LoadReport(reportStream);
        MemoryStream memoryStream = new MemoryStream();
        writer.Save(memoryStream, format);

        // Download the generated document from client.
        memoryStream.Position = 0;
        FileStreamResult fileStreamResult = new FileStreamResult(memoryStream, "application/pdf");
        fileStreamResult.FileDownloadName = fileName;
        return fileStreamResult;
    }
}