Преобразование HTML в изображение в памяти на C# и .NET
Полный код
GitHubusing 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($"Error: {ex.Message}");
Console.ReadLine();
}
}
}
}
Imports System
Imports System.IO
Imports System.IO.Compression
Imports SautinSoft.PdfVision
Namespace Sample
Friend Class Program
Shared Sub Main(ByVal args() As String)
ConvertHtmlToJpegInMemory()
End Sub
Public Shared Sub ConvertHtmlToJpegInMemory()
' This string will contains our input HTML document.
Dim inpFile As String = Path.GetFullPath("..\..\..\example.html")
Dim inpHtml As String = File.ReadAllText(inpFile)
Dim imgBytes() As Byte = Nothing
' Before starting, we recommend to get a free 100-day key:
' https://sautinsoft.com/start-for-free/
' Apply the key here:
' SautinSoft.PdfVision.SetLicense("...");
Dim v As New PdfVision()
Dim options As New ScreenshotOptions() With {
.FullPage = False,
.ViewPortOptions = New ViewPortOptions() With {
.Width = 800,
.Height = 600
},
.Type = ScreenshotType.Jpeg,
.Quality = 90,
.BaseUrl = Path.GetDirectoryName(inpFile),
.ChromiumBaseDirectory = Path.GetFullPath("..\..\..\..\..\..\Chromium\")
}
' The baseURL property specifies Or retrieves the base URL used for
' relative path resolution with URL script commands that are embedded in media items.
' Website - http://example.com/ Or http://example.com/contact
' LocalPath - C:/example/ Or C:/example/contact
' BaseUrl = @"The_Absolute_Path_to_Image"
Try
' The whole conversion process will be done completely in memory.
imgBytes = v.GetScreenshot(inpHtml, options)
' This file is necessary only to show the result.
Dim outFile As String = (New FileInfo("Result.jpg")).FullName
' Save imgBytes to the file and open the result for demonstration purposes.
File.WriteAllBytes(outFile, imgBytes)
System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outFile) With {.UseShellExecute = True})
Catch ex As Exception
Console.WriteLine($"Error: {ex.Message}")
Console.ReadLine()
End Try
End Sub
End Class
End Namespace
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