How to use EmulateMediaTypeAsync method of PuppeteerSharp.Page class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Page.EmulateMediaTypeAsync

ReportController.cs

Source:ReportController.cs

...64                Headless = true,65                ExecutablePath = PuppeteerExtensions.ExecutablePath66            });67            await using var page = await browser.NewPageAsync();68            await page.EmulateMediaTypeAsync(MediaType.Screen);69            await page.SetContentAsync(html);70            var pdfContent = await page.PdfStreamAsync(new PdfOptions71            {72                Format = PaperFormat.A4,73                PrintBackground = true74            });75            return File(pdfContent, "application/pdf", $"Raport-{leaveType.LeaveDescription}.pdf");76        }77        [Route("GenerateLeaveApplication/{id}")]78        public async Task<IActionResult> GenerateLeaveApplication(int id)79        {80            var data = await _context.Leaves.Include(l => l.LeaveType).Include(l => l.Person).FirstOrDefaultAsync(p => p.LeaveId == id);81            var html = await _templateService.RenderAsync("../Report/LeaveApplication", data);82            await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions83            {84                Headless = true,85                ExecutablePath = PuppeteerExtensions.ExecutablePath86            });87            await using var page = await browser.NewPageAsync();88            await page.EmulateMediaTypeAsync(MediaType.Screen);89            await page.SetContentAsync(html);90            var pdfContent = await page.PdfStreamAsync(new PdfOptions91            {92                Format = PaperFormat.A4,93                PrintBackground = true94            });95            return File(pdfContent, "application/pdf", $"Wniosek-{data.Person.FullName}.pdf");96        }97        [Route("GenerateEmployeesReport/{id}")]98        public async Task<IActionResult> GenerateEmployeesReport(int id)99        {100            var leaves = await _context.Leaves.Include(l => l.LeaveType).Include(l => l.Person).Where(p => p.PersonId == id && p.IsConfirmed == true).ToListAsync();101            var leaveTypes = await _context.LeaveTypePerson.Where(p => p.PersonId == id).ToListAsync();102            var person = await _context.Person.FirstOrDefaultAsync(p => p.PersonId == id);103            var data = new EmployeesReportViewModel { Person = person, Leaves = leaves, LeaveTypes = leaveTypes };104            var html = await _templateService.RenderAsync("../Report/EmployeesReport", data);105            await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions106            {107                Headless = true,108                ExecutablePath = PuppeteerExtensions.ExecutablePath109            });110            await using var page = await browser.NewPageAsync();111            await page.EmulateMediaTypeAsync(MediaType.Screen);112            await page.SetContentAsync(html);113            var pdfContent = await page.PdfStreamAsync(new PdfOptions114            {115                Format = PaperFormat.A4,116                PrintBackground = true117            });118            return File(pdfContent, "application/pdf", $"Raport-{data.Person.FullName}.pdf");119        }120        public IActionResult Generate()121        {122            return View();123        }124    }125}...

GeneratePdf.cs

Source:GeneratePdf.cs

...77                });78                // dimensions = await page.EvaluateExpressionAsync<string>(jsWidth);79                await page.EvaluateExpressionHandleAsync("document.fonts.ready"); // Wait for fonts to be loaded. Omitting this might result in no text rendered in pdf.80                // use the screen mode for viewing the web page81                await page.EmulateMediaTypeAsync(PuppeteerSharp.Media.MediaType.Screen);82                // define some options83                var options = new PdfOptions()84                {85                    Width = width,86                    Height = 1080,87                    Format = PuppeteerSharp.Media.PaperFormat.Letter,88                    DisplayHeaderFooter = false,89                    PrintBackground = printBackground90                };91                // throws an error if margin is less than 1092                if (margin >= 10)93                {94                    options.MarginOptions = new PuppeteerSharp.Media.MarginOptions()95                    {...

Program.BuildCommand.cs

Source:Program.BuildCommand.cs

...81                    ExecutablePath = fetcher.GetExecutablePath(BrowserFetcher.DefaultRevision),82                    Headless = true,83                });84                var page = await browser.NewPageAsync();85                await page.EmulateMediaTypeAsync(MediaType.Print);86                var encoded = System.Convert.ToBase64String(Encoding.UTF8.GetBytes(result));87                await page.GoToAsync($"data:text/html;base64,{encoded}", WaitUntilNavigation.Networkidle0);88                await page.PdfAsync(resumePdfPath, new PdfOptions89                {90                    Format = PaperFormat.Letter,91                    PrintBackground = true,92                });93                console.Out.WriteLine("Done...");94            });95            return command;96        }97    }98}...

PrintController.cs

Source:PrintController.cs

...42                Headless = true,43                ExecutablePath = PuppeteerExtensions.ExecutablePath44            });45            await using var page = await browser.NewPageAsync();46            await page.EmulateMediaTypeAsync(MediaType.Screen);47            await page.SetContentAsync(html);48            var pdfContent = await page.PdfStreamAsync(new PdfOptions49            {50                Format = PaperFormat.A4,51                PrintBackground = true52            });53            return File(pdfContent, "application/pdf", $"Invoice-{model.Id}.pdf");54        }55    }56}...

Service.cs

Source:Service.cs

...36                using var browserFetcher = new BrowserFetcher();37                await browserFetcher.DownloadAsync();38                await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true });39                await using var page = await browser.NewPageAsync();40                await page.EmulateMediaTypeAsync(MediaType.Screen);41                await page.SetContentAsync(html);42                await page.PdfAsync("Invoice.pdf", new PdfOptions43                {44                    Format = PaperFormat.A4,45                    PrintBackground = true46                });47            });48        }49    }50}...

PdfRender.cs

Source:PdfRender.cs

...17            {18                Headless = true19            });20            var page = await browser.NewPageAsync();21            await page.EmulateMediaTypeAsync(MediaType.Screen);22            await page.SetContentAsync(html);23            var pdfContent = await page.PdfStreamAsync(new PdfOptions24            {25                Format = PaperFormat.A4,26                PrintBackground = true27            });28            string outputPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Invoices");29            Directory.CreateDirectory(outputPath);30            outputPath = Path.Combine(outputPath, "Invoice_"+invoiceId+".pdf");31            using (FileStream file = new FileStream(outputPath, FileMode.Create, System.IO.FileAccess.Write))32            {33                byte[] bytes = new byte[pdfContent.Length];34                pdfContent.Read(bytes, 0, (int)pdfContent.Length);35                file.Write(bytes, 0, bytes.Length);...

EmulateMediaTypeTests.cs

Source:EmulateMediaTypeTests.cs

...14        public async Task ShouldWork()15        {16            Assert.True(await Page.EvaluateExpressionAsync<bool>("matchMedia('screen').matches"));17            Assert.False(await Page.EvaluateExpressionAsync<bool>("matchMedia('print').matches"));18            await Page.EmulateMediaTypeAsync(MediaType.Print);19            Assert.False(await Page.EvaluateExpressionAsync<bool>("matchMedia('screen').matches"));20            Assert.True(await Page.EvaluateExpressionAsync<bool>("matchMedia('print').matches"));21            await Page.EmulateMediaTypeAsync(MediaType.None);22            Assert.True(await Page.EvaluateExpressionAsync<bool>("matchMedia('screen').matches"));23            Assert.False(await Page.EvaluateExpressionAsync<bool>("matchMedia('print').matches"));24        }25    }26}...

Program.cs

Source:Program.cs

...10{11    Headless = true12});13await using var page = await browser.NewPageAsync();14await page.EmulateMediaTypeAsync(MediaType.Screen);15await page.SetContentAsync(content);16var pdfContent = await page.PdfStreamAsync(new PdfOptions17{18    Format = PaperFormat.A4,19    PrintBackground = true20});21using (FileStream outputFileStream = new FileStream("test.pdf", FileMode.Create))22{23    pdfContent.CopyTo(outputFileStream);24}...

EmulateMediaTypeAsync

Using AI Code Generation

1using System.Threading.Tasks;2using PuppeteerSharp;3{4    {5        static async Task Main(string[] args)6        {7            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);8            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10                Args = new[] { "--no-sandbox" }11            }))12            using (var page = await browser.NewPageAsync())13            {14                await page.EmulateMediaTypeAsync(MediaType.Screen);15            }16        }17    }18}19How to use PuppeteerSharp in C# to automate Google Chrome? (Part 2)20How to use PuppeteerSharp in C# to automate Google Chrome? (Part 3)21How to use PuppeteerSharp in C# to automate Google Chrome? (Part 4)22How to use PuppeteerSharp in C# to automate Google Chrome? (Part 5)23How to use PuppeteerSharp in C# to automate Google Chrome? (Part 6)24How to use PuppeteerSharp in C# to automate Google Chrome? (Part 7)25How to use PuppeteerSharp in C# to automate Google Chrome? (Part 8)26How to use PuppeteerSharp in C# to automate Google Chrome? (Part 9)27How to use PuppeteerSharp in C# to automate Google Chrome? (Part 10)28How to use PuppeteerSharp in C# to automate Google Chrome? (Part 11)29How to use PuppeteerSharp in C# to automate Google Chrome? (Part 12)30How to use PuppeteerSharp in C# to automate Google Chrome? (Part 13)31How to use PuppeteerSharp in C# to automate Google Chrome? (Part 14)32How to use PuppeteerSharp in C# to automate Google Chrome? (Part 15)33How to use PuppeteerSharp in C# to automate Google Chrome? (Part 16)34How to use PuppeteerSharp in C# to automate Google Chrome? (Part 17)35How to use PuppeteerSharp in C# to automate Google Chrome? (Part 18)

EmulateMediaTypeAsync

Using AI Code Generation

1using System.Threading.Tasks;2using PuppeteerSharp;3{4    {5        static async Task Main(string[] args)6        {7            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);8            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))9            using (var page = await browser.NewPageAsync())10            {11                await page.EmulateMediaTypeAsync(MediaType.Screen);12                await page.ScreenshotAsync("screenshot.png");13            }14        }15    }16}

EmulateMediaTypeAsync

Using AI Code Generation

1await page.EmulateMediaTypeAsync(MediaType.Print);2await page.EmulateMediaTypeAsync(MediaType.Screen);3await page.EmulateMediaTypeAsync(MediaType.Speech);4await page.EmulateMediaTypeAsync(MediaType.None);5await page.EmulateMediaTypeAsync(MediaType.Unknown);6await page.EmulateMediaTypeAsync(MediaType.Custom);7await page.EmulateMediaTypeAsync(MediaType.Print);8await page.EmulateMediaTypeAsync(MediaType.Screen);9await page.EmulateMediaTypeAsync(MediaType.Speech);10await page.EmulateMediaTypeAsync(MediaType.None);11await page.EmulateMediaTypeAsync(MediaType.Unknown);12await page.EmulateMediaTypeAsync(MediaType.Custom);13await page.EmulateMediaTypeAsync(MediaType.Print);14await page.EmulateMediaTypeAsync(MediaType.Screen);15await page.EmulateMediaTypeAsync(MediaType.Speech);

EmulateMediaTypeAsync

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });2var page = await browser.NewPageAsync();3await page.EmulateMediaTypeAsync(MediaType.Screen);4await page.ScreenshotAsync("1.png", new ScreenshotOptions { FullPage = true });5await browser.CloseAsync();6var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });7var page = await browser.NewPageAsync();8await page.EmulateMediaTypeAsync(MediaType.Print);9await page.ScreenshotAsync("2.png", new ScreenshotOptions { FullPage = true });10await browser.CloseAsync();11var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });12var page = await browser.NewPageAsync();13await page.EmulateMediaTypeAsync(null);14await page.ScreenshotAsync("3.png", new ScreenshotOptions { FullPage = true });15await browser.CloseAsync();16Recommended Posts: PuppeteerSharp | EmulateMediaAsync() Method17PuppeteerSharp | EmulateTimezoneAsync() Method18PuppeteerSharp | EmulateVisionDeficiencyAsync() Method19PuppeteerSharp | EmulateAsync() Method20PuppeteerSharp | EmulateMediaAsync() Method21PuppeteerSharp | EmulateTimezoneAsync() Method22PuppeteerSharp | EmulateVisionDeficiencyAsync() Method23PuppeteerSharp | EmulateAsync() Method24PuppeteerSharp | EmulateMediaAsync() Method25PuppeteerSharp | EmulateTimezoneAsync() Method26PuppeteerSharp | EmulateVisionDeficiencyAsync() Method27PuppeteerSharp | EmulateAsync() Method28PuppeteerSharp | EmulateMediaAsync() Method29PuppeteerSharp | EmulateTimezoneAsync() Method

EmulateMediaTypeAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9            var browser = await Puppeteer.LaunchAsync(new LaunchOptions10            {11            });12            var page = await browser.NewPageAsync();13            await page.EmulateMediaTypeAsync(MediaType.Print);14            await page.PdfAsync("print.pdf")

EmulateMediaTypeAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4using System.IO;5{6    {7        static void Main(string[] args)8        {9            MainAsync().Wait();10        }11        private static async Task MainAsync()12        {13            var browser = await Puppeteer.LaunchAsync(new LaunchOptions14            {15            });16            var page = await browser.NewPageAsync();17            await page.EmulateMediaTypeAsync(MediaType.Screen);18            await page.ScreenshotAsync("google.png");19            await browser.CloseAsync();20        }21    }22}23using System;24using System.Threading.Tasks;25using PuppeteerSharp;26using System.IO;27{28    {29        static void Main(string[] args)30        {31            MainAsync().Wait();32        }33        private static async Task MainAsync()34        {35            var browser = await Puppeteer.LaunchAsync(new LaunchOptions36            {37            });38            var page = await browser.NewPageAsync();39            await page.EmulateMediaTypeAsync(MediaType.Print);40            await page.ScreenshotAsync("google.png");41            await browser.CloseAsync();42        }43    }44}45using System;46using System.Threading.Tasks;47using PuppeteerSharp;48using System.IO;49{50    {51        static void Main(string[] args)52        {53            MainAsync().Wait();54        }55        private static async Task MainAsync()56        {57            var browser = await Puppeteer.LaunchAsync(new LaunchOptions58            {59            });60            var page = await browser.NewPageAsync();61            await page.EmulateMediaTypeAsync(MediaType.Print);62            await page.SetContentAsync("<html><body><div style='width: 100px; height: 100px; background-color: blue;'></div></body></html>");63            await page.ScreenshotAsync("blue.png");

EmulateMediaTypeAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });10            var page = await browser.NewPageAsync();11            await page.EmulateMediaTypeAsync(MediaType.Screen);12            await page.ScreenshotAsync("google.png");13            await browser.CloseAsync();14        }15    }16}

EmulateMediaTypeAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10            });11            var page = await browser.NewPageAsync();12            await page.EmulateMediaTypeAsync(MediaType.Screen);13            await page.ScreenshotAsync("screenshot.png");14            await browser.CloseAsync();15        }16    }17}

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