如何忽略外部 Dll 的访问冲突异常 - .NET Core 6

发布于 2025-01-13 02:08:45 字数 2864 浏览 1 评论 0原文

我正在使用 DinkToPDF dll 将 XML 转换为 PDF。

我需要生成 2000 个 PDF。

所以我尝试将 PDF 生成逻辑放入 for 循环中。它生成前 2 或 3 个 PDF，然后在下一次迭代中因本机异常而崩溃，

这是我的 PDF 生成类。在 for 循环中，Generate() 方法将被调用 2000 次

公共静态类 PDFEngine
{
    公共静态无效生成（字符串html，字符串目录，字符串文件名）
    {
        var转换器 = new BasicConverter(new PdfTools());

        转换器.PhaseChanged += Converter_PhaseChanged;
        Converter.ProgressChanged += Converter_ProgressChanged;
        转换器.Finished += Converter_Finished;
        转换器.警告+= Converter_Warning;
        转换器.Error += Converter_Error;

        var doc = new HtmlToPdfDocument()
        {
            全局设置 = {
                颜色模式=颜色模式.颜色,
                方向=方向.肖像，
                纸张尺寸 = PaperKind.A4,
            },
            对象={
                新的对象设置（）{
                    页数 = true,
                    Html内容 = html,
                    WebSettings = { DefaultEncoding = "utf-8" },
                    HeaderSettings = { FontSize = 9, Right = "第 [page] 页，共 [toPage]", Line = true },
                    FooterSettings = { FontSize = 9, Right = "第 [page] 页，共 [toPage]" }
                }
            }
        };

        byte[] pdf =转换器.Convert(doc);

        if (!Directory.Exists(目录))
        {
            目录.CreateDirectory(目录);
        }

        使用 (FileStream 流 = new FileStream($"{directory}\\{fileName}", FileMode.Create))
        {
            流.Write(pdf, 0, pdf.Length);
        }
    }

    私有静态无效Converter_Error（对象发送者，DinkToPdf.EventDefinitions.ErrorArgs e）
    {
        Console.WriteLine("[错误] {0}", e.Message);
    }

    私有静态无效Converter_Warning（对象发送者，DinkToPdf.EventDefinitions.WarningArgs e）
    {
        Console.WriteLine("[WARN] {0}", e.Message);
    }

    私有静态无效Converter_Finished（对象发送者，DinkToPdf.EventDefinitions.FinishedArgs e）
    {
        Console.WriteLine("转换{0} ", e.Success ? "成功" : "不成功");
    }

    私有静态无效Converter_ProgressChanged（对象发送者，DinkToPdf.EventDefinitions.ProgressChangedArgs e）
    {
        Console.WriteLine("进度已更改 {0}", e.Description);
    }

    私有静态无效Converter_PhaseChanged（对象发送者，DinkToPdf.EventDefinitions.PhaseChangedArgs e）
    {
        Console.WriteLine("阶段已更改为 {0} - {1}", e.CurrentPhase, e.Description);
    }
}

System.AccessViolationException: '尝试读取或写入受保护的内容记忆。这通常表明其他内存已损坏。'

由于这是从非托管 dll 生成的异常，所以我无法捕获它。

我尝试在每个循环中添加

GC.Collect();
GC.WaitForPendingFinalizers();

，但它不起作用。我完全意识到这个错误是致命的并且不好继续，但我没有办法处理 2000 个文件。

有没有其他方法可以

抑制异常并继续循环
通过在不同的应用程序域中运行它来解决此错误？

原文

I'm using DinkToPDF dll to convert an XML to PDF.

I need to generate 2000 PDF's.

So I try to do put the PDF generation logic inside for loop.
It generates first 2 or 3 PDF's and then in the next iteration crashes with a native Exception

This is my PDF generation class. Generate() method will be called 2000 times inside a forloop

public static class PDFEngine
{
    public static void Generate(string html, string directory, string fileName)
    {
        var converter = new BasicConverter(new PdfTools());

        converter.PhaseChanged += Converter_PhaseChanged;
        converter.ProgressChanged += Converter_ProgressChanged;
        converter.Finished += Converter_Finished;
        converter.Warning += Converter_Warning;
        converter.Error += Converter_Error;

        var doc = new HtmlToPdfDocument()
        {
            GlobalSettings = {
                ColorMode = ColorMode.Color,
                Orientation = Orientation.Portrait,
                PaperSize = PaperKind.A4,
            },
            Objects = {
                new ObjectSettings() {
                    PagesCount = true,
                    HtmlContent = html,
                    WebSettings = { DefaultEncoding = "utf-8" },
                    HeaderSettings = { FontSize = 9, Right = "Page [page] of [toPage]", Line = true },
                    FooterSettings = { FontSize = 9, Right = "Page [page] of [toPage]" }
                }
            }
        };

        byte[] pdf = converter.Convert(doc);

        if (!Directory.Exists(directory))
        {
            Directory.CreateDirectory(directory);
        }

        using (FileStream stream = new FileStream(quot;{directory}\\{fileName}", FileMode.Create))
        {
            stream.Write(pdf, 0, pdf.Length);
        }
    }

    private static void Converter_Error(object sender, DinkToPdf.EventDefinitions.ErrorArgs e)
    {
        Console.WriteLine("[ERROR] {0}", e.Message);
    }

    private static void Converter_Warning(object sender, DinkToPdf.EventDefinitions.WarningArgs e)
    {
        Console.WriteLine("[WARN] {0}", e.Message);
    }

    private static void Converter_Finished(object sender, DinkToPdf.EventDefinitions.FinishedArgs e)
    {
        Console.WriteLine("Conversion {0} ", e.Success ? "successful" : "unsucessful");
    }

    private static void Converter_ProgressChanged(object sender, DinkToPdf.EventDefinitions.ProgressChangedArgs e)
    {
        Console.WriteLine("Progress changed {0}", e.Description);
    }

    private static void Converter_PhaseChanged(object sender, DinkToPdf.EventDefinitions.PhaseChangedArgs e)
    {
        Console.WriteLine("Phase changed {0} - {1}", e.CurrentPhase, e.Description);
    }
}

System.AccessViolationException: 'Attempted to read or write protected
memory. This is often an indication that other memory is corrupt.'

Since this is an Exception generating from an Unmanaged dll, I can't catch it.

I tried adding

GC.Collect();
GC.WaitForPendingFinalizers();

during every loop but it's not working.
I'm fully aware that this error is fatal and not good to continue but I don't have a way to process 2000 files.

Is there any other way to either