c# - 如何在 C# 中引用 Ghostscript DLL

Question

我正在使用 C# 包装器使用 Ghostscript 将 PDF 转换为图像，但我似乎无法正确引用 dll。我将 DLL 存储在 bin 文件夹中(也不知道这是否是最好的存放位置)这是我的代码:

 byte[] fileData = null;
            using (var binaryReader = new BinaryReader(Request.Files[0].InputStream))
            {
                fileData = binaryReader.ReadBytes(Request.Files[0].ContentLength);
            }

    string path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().CodeBase);

    Ghostscript.NET.Rasterizer.GhostscriptRasterizer rasterizer = null;
    Ghostscript.NET.GhostscriptVersionInfo vesion = new Ghostscript.NET.GhostscriptVersionInfo(new Version(0, 0, 0), path + @"\gsdll64.dll", string.Empty, Ghostscript.NET.GhostscriptLicense.GPL);
    Stream inStream = new MemoryStream(fileData);
    MemoryStream outStream = new MemoryStream();
    List<Image> imageList = new List<Image>();
    using (rasterizer = new Ghostscript.NET.Rasterizer.GhostscriptRasterizer())
    {
        rasterizer.Open(inStream, vesion, false);
         for (int i = 1; i <= rasterizer.PageCount; i++)
        {
            //string pageFilePath = Path.Combine(outputPath, Path.GetFileNameWithoutExtension(file) + "-p" + i.ToString() + ".jpg");
            int dpi = 200;
            Image img = rasterizer.GetPage(dpi, dpi, i);
            img.Save(outStream, ImageFormat.Jpeg);
            Image img = new Image
            {
                imgByteArray = outStream.ToArray()
            };
            imageList.Add(image);
        }
         rasterizer.Close();
    }

我遇到了 找不到 Ghostscript native 库 错误。这是我得到的路径

我认为这与 DLLPath 字符串中的双/和“file://”有关。我还应该指定 LipPath 吗？有帮助吗？？

Answer 1

在您的情况下，您应该以这种方式制作 ghostscript dll 路径:

string binPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
string gsDllPath = Path.Combine(binPath, Environment.Is64BitProcess ? "gsdll64.dll" : "gsdll32.dll");