如何使用文档处理控件Aspose.Word将图像转换为PDF文档
对于文档处理控件Aspose.words，它的具有代表性的功能是在没有安装Microsoft Word的情况下，也能实现生成、打印、渲染、邮件合并，文档格式转换等功能。今天在使用Aspose.Words过程中，意外的发现这款文档处理软件的另外一个功能，它可以将图像转换为PDF文件，接下来就为大家分享一下实现这一功能的具体代码：

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Reflection;
 
using Aspose.Words;
using Aspose.Words.Drawing;
 
namespace ImageToPdf
{
    class Program
    {
        public static void Main(string[] args)
        {
            // Sample infrastructure.
            string exeDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + Path.DirectorySeparatorChar;
            string dataDir = new Uri(new Uri(exeDir), @"../../Data/").LocalPath;
 
            ConvertImageToPdf(dataDir + "Test.jpg", dataDir + "TestJpg Out.pdf");
            ConvertImageToPdf(dataDir + "Test.png", dataDir + "TestPng Out.pdf");
            ConvertImageToPdf(dataDir + "Test.wmf", dataDir + "TestWmf Out.pdf");
            ConvertImageToPdf(dataDir + "Test.tiff", dataDir + "TestTiff Out.pdf");
            ConvertImageToPdf(dataDir + "Test.gif", dataDir + "TestGif Out.pdf");
        }
 
        /// <summary>
        /// Converts an image to PDF using Aspose.Words for .NET.
        /// </summary>
        /// <param name="inputFileName">File name of input image file.</param>
        /// <param name="outputFileName">Output PDF file name.</param>
        public static void ConvertImageToPdf(string inputFileName, string outputFileName)
        {
            // Create Aspose.Words.Document and DocumentBuilder.
            // The builder makes it simple to add content to the document.
            Document doc = new Document();
            DocumentBuilder builder = new DocumentBuilder(doc);
 
            // Read the image from file, ensure it is disposed.
            using (Image image = Image.FromFile(inputFileName))
            { 
 
                // Find which dimension the frames in this image represent. For example 
                // the frames of a BMP or TIFF are "page dimension" whereas frames of a GIF image are "time dimension". 
                FrameDimension dimension = new FrameDimension(image.FrameDimensionsList[0]); 
 
                 // Get the number of frames in the image.
                int framesCount = image.GetFrameCount(dimension);
 
                // Get the number of frames in the image.
                int framesCount = image.GetFrameCount(FrameDimension.Page);
 
                // Loop through all frames.
                for (int frameIdx = 0; frameIdx < framesCount; frameIdx++)
                {
                    // Insert a section break before each new page, in case of a multi-frame TIFF.
                    if (frameIdx != 0)
                        builder.InsertBreak(BreakType.SectionBreakNewPage);
 
                    // Select active frame.
                    image.SelectActiveFrame(dimension, frameIdx);
 
                    // We want the size of the page to be the same as the size of the image.
                    // Convert pixels to points to size the page to the actual image size.
                    PageSetup ps = builder.PageSetup;
                    ps.PageWidth = ConvertUtil.PixelToPoint(image.Width, image.HorizontalResolution);
                    ps.PageHeight = ConvertUtil.PixelToPoint(image.Height, image.VerticalResolution); 
 
 
                    // Insert the image into the document and position it at the top left corner of the page.
                    builder.InsertImage(
                        image,
                        RelativeHorizontalPosition.Page,
                        0,
                        RelativeVerticalPosition.Page,
                        0,
                        ps.PageWidth,
                        ps.PageHeight,
                        WrapType.None);
                }
            }
 
            // Save the document to PDF.
            doc.Save(outputFileName);
        }
    }
}

文档处理控件 Aspose.Words 文档格式转换
[解决办法]
谢谢楼上分享；
我最近也在看这个文档，以后多多交流》
其实核心代码就两句：

Document _wordDoc = new Document(@"doc文档路径");
_wordDoc.Save(@"SaveFileName", SaveFormat.Pdf);