绘图图像大小自动增加，System.Drawing.Image，C#，ASP.NET

发布于 2024-11-05 15:50:19 字数 903 浏览 3 评论 0原文

我想通过阅读来绘制图像从文件系统图像文件，并渲染它在文档中，如下：

if (File.Exists(imageFilePath)) //所有图像文件均为 16*16 像素
                {
                    位图 位图 = new 位图(18, 18);
                    图形图形 = Graphics.FromImage(位图);

                    图像图像 = Image.FromFile(imageFilePath);
                    图形.DrawImage(图像, 1, 1); // 之间有1个像素空间
                }
然而，灰色图像呈现正确的尺寸（18*18 像素），而彩色图像被截断，或者必须增加位图大小（例如位图(23, 23)。我想要所有的图片有相同的尺寸！图像尺寸在文件系统上都是相同的。

有点紧迫。任何想法都会非常感谢！

解决方案如下：

   if (File.Exists(imageFilePath))
            {
                Bitmap bitmap = new Bitmap(18, 18);
                Graphics graphics = Graphics.FromImage(bitmap);

                Image image = Image.FromFile(imageFilePath);
                graphics.DrawImage(image, 1, 1, **18, 18**);                  

            }

原文

I want to draw an image by reading it
from file sytem image file, and render
it on a document, below:

if (File.Exists(imageFilePath))   //all image file are 16*16 in pixel
                {
                    Bitmap bitmap = new Bitmap(18, 18);
                    Graphics graphics = Graphics.FromImage(bitmap);

                    Image image = Image.FromFile(imageFilePath);
                    graphics.DrawImage(image, 1, 1); //1 pixel space in between
                }
However, gray images renders the
correct size (18*18 in pixel),
whereas, colour images are cut off, or
have to increase the BitMap size (e.g.
Bitmap(23, 23). I want to all images
have the same size! The image sizes
are all the same on the file system.

It is a bit of urgency. Any idea would
be very much appreicated!

Solution below:

   if (File.Exists(imageFilePath))
            {
                Bitmap bitmap = new Bitmap(18, 18);
                Graphics graphics = Graphics.FromImage(bitmap);

                Image image = Image.FromFile(imageFilePath);
                graphics.DrawImage(image, 1, 1, **18, 18**);                  

            }

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