Преобразование HTML в изображение в памяти на C# и .NET


Полный код

using System;
using System.IO;
using SautinSoft.PdfVision;

namespace Sample
{
    class Program
    {
        static void Main(string[] args)
        {
            ConvertHtmlToJpegInMemory();
        }
        public static void ConvertHtmlToJpegInMemory()
        {
            // This string will contains our input HTML document.
            string inpFile = Path.GetFullPath(@"..\..\..\example.html");
            string inpHtml = File.ReadAllText(inpFile);
            byte[] imgBytes = null;
			// Before starting, we recommend to get a free 100-day key:
            // https://sautinsoft.com/start-for-free/
            
            // Apply the key here:
			// SautinSoft.PdfVision.SetLicense("...");
            
            PdfVision v = new PdfVision();
            
            ScreenshotOptions options = new ScreenshotOptions()
            {
                FullPage = false,
                ViewPortOptions = new ViewPortOptions()
                {
                    Width = 800,
                    Height = 600
                },
                Type = ScreenshotType.Jpeg,
                Quality = 90,
                BaseUrl = Path.GetDirectoryName(inpFile),
                // The baseURL property specifies or retrieves the base URL used for
                // relative path resolution with URL script commands that are embedded in media items.
                // Website - http://example.com/ or http://example.com/contact
                // LocalPath - C:/example/ or C:/example/contact
                // BaseUrl = @"The_Absolute_Path_to_Image"
				
				//Set a custom directory where will be placed portable Chromium browser. 
                //Default value depends of platform (win-x64, win-86, linux-x64 or osx-x64). 
                ChromiumBaseDirectory = Path.GetFullPath(@"..\..\..\..\..\..\Chromium\")
            };

            try
            {
                // The whole conversion process will be done completely in memory.
                imgBytes = v.GetScreenshot(inpHtml, options);

                // This file is necessary only to show the result.
                string outFile = new FileInfo("Result.jpg").FullName;
                // Save imgBytes to the file and open the result for demonstration purposes.
                File.WriteAllBytes(outFile, imgBytes);
                System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(outFile) { UseShellExecute = true });
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error: {ex.Message}");
                Console.ReadLine();
            }
        }
    }
}

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Imports System
Imports System.IO
Imports System.IO.Compression
Imports SautinSoft.PdfVision

Namespace Sample
	Friend Class Program
		Shared Sub Main(ByVal args() As String)
			ConvertHtmlToJpegInMemory()
		End Sub
		Public Shared Sub ConvertHtmlToJpegInMemory()
			' This string will contains our input HTML document.
			Dim inpFile As String = Path.GetFullPath("..\..\..\example.html")
			Dim inpHtml As String = File.ReadAllText(inpFile)
			Dim imgBytes() As Byte = Nothing
			' Before starting, we recommend to get a free 100-day key:
            ' https://sautinsoft.com/start-for-free/
            
            ' Apply the key here:
			' SautinSoft.PdfVision.SetLicense("...");

			Dim v As New PdfVision()
			
			Dim options As New ScreenshotOptions() With {
				.FullPage = False,
				.ViewPortOptions = New ViewPortOptions() With {
					.Width = 800,
					.Height = 600
				},
				.Type = ScreenshotType.Jpeg,
				.Quality = 90,
				.BaseUrl = Path.GetDirectoryName(inpFile),
				.ChromiumBaseDirectory = Path.GetFullPath("..\..\..\..\..\..\Chromium\")
			}

			' The baseURL property specifies Or retrieves the base URL used for
			' relative path resolution with URL script commands that are embedded in media items.
			' Website - http://example.com/ Or http://example.com/contact
			' LocalPath - C:/example/ Or C:/example/contact
			' BaseUrl = @"The_Absolute_Path_to_Image"

			Try
				' The whole conversion process will be done completely in memory.
				imgBytes = v.GetScreenshot(inpHtml, options)

				' This file is necessary only to show the result.
				Dim outFile As String = (New FileInfo("Result.jpg")).FullName
				' Save imgBytes to the file and open the result for demonstration purposes.
				File.WriteAllBytes(outFile, imgBytes)
				System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outFile) With {.UseShellExecute = True})
			Catch ex As Exception
				Console.WriteLine($"Error: {ex.Message}")
				Console.ReadLine()
			End Try
		End Sub
	End Class
End Namespace

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