replace - 如何使用 Novacode Docx 替换 word 文档中的图像

Question

我想使用 Novacode Docx 替换 word 文档中的图像，但我只知道通过此代码插入

var gDoc = DocX.Load(@"MauPhieuNhapCBCC.docx");
using (MemoryStream ms = new MemoryStream())
        {
            System.Drawing.Image myImg = System.Drawing.Image.FromFile(@"img.jpg");

            myImg.Save(ms, myImg.RawFormat);  // Save your picture in a memory stream.
            ms.Seek(0, SeekOrigin.Begin);

            Image img = gDoc.AddImage(ms); // Create image.
            Picture pic1 = img.CreatePicture(); 
            // Create picture.
            var abc = gDoc.Paragraphs.FirstOrDefault(g => g.Pictures.Count > 0);
            abc.Alignment = Alignment.right;
            abc.InsertPicture(pic1,29).Position(0.3); // Insert picture into paragraph.
        }
        gDoc.SaveAs("Exported.docx");

如何在特殊位置无法替换或插入？

Answer 1

你可以这样做，这可能不是理想的方式，但它工作正常:

var gDoc = DocX.Load(@"MauPhieuNhapCBCC.docx");
for (int f = 0; f < gDoc.Images.Count; f++) //Loop through the images of the document
            {
                Novacode.Image imo = gDoc.Images[f]; //Get image of the docuemnt
                if (imo.Id == "imageIdInDocument") //Check the id
                {
                    using (SD.Image newImg = SD.Image.FromFile("newImagePath")) //Load the new image for replacement
                    {
                        SD.Bitmap bMa = new SD.Bitmap(imo.GetStream(FileMode.Open, FileAccess.ReadWrite));
                        SD.Graphics graf = SD.Graphics.FromImage(bMa);
                        graf.Clear(SD.Color.White); //Set the image of the document all white

                        //Below we insert our new image over the one in the document
                        //We might need to change the image size to fit the area of our existing image
                        //If that were the case we give a function to resize images
                        SD.Image newResizeImg = meths.ResizeImage(newImg, newWidth, newHeight);

                        //Below we set the point(0, 0) to overlap the new image from the top left corner
                        graf.DrawImage(newResizeImg, new SD.Rectangle(new SD.Point(0, 0), newResizeImg.Size),
                        new SD.Rectangle(new SD.Point(), newResizeImg.Size), SD.GraphicsUnit.Pixel);
                        bMa.Save(imo.GetStream(FileMode.Create, FileAccess.Write), SD.Imaging.ImageFormat.Jpeg);
                    }

                }
            }

这里是调整图片大小的函数:

public SD.Image ResizeImage(SD.Image img, int newWidth, int newHeight)
    {
        if (img.Width < newWidth && img.Height < newHeight) return img;
        using (img)
        {
            SD.Bitmap cpy = new SD.Bitmap(newWidth, newHeight, SD.Imaging.PixelFormat.Format32bppArgb);
            using (SD.Graphics gr = SD.Graphics.FromImage(cpy))
            {
                gr.Clear(SD.Color.Transparent);
                gr.InterpolationMode = SD.Drawing2D.InterpolationMode.HighQualityBicubic;
                gr.DrawImage(img, new SD.Rectangle(0, 0, newWidth, newHeight), new SD.Rectangle(0, 0, img.Width, img.Height), SD.GraphicsUnit.Pixel);
            }
            return cpy;
        }
    }

我们基本上做的是获取文档的图像，将其涂成白色，然后将新图像设置在现有图像中，大小相同或更小。希望这对某人有帮助。