编码如何在asp.net中调整图像大小 [英] coding for how to resize image in asp.net

问题描述

如何在asp.net中调整图像大小的编码

coding for how to resize image in asp.net

推荐答案

尝试
在ASP.NET中上传时调整图像大小 [ ^ ]
http://imageresizing.net/ [ ^ ]

Try
Resizing images while uploading in ASP.NET[^]
http://imageresizing.net/[^]

嗨@Abhinav

请使用以下代码

Hi @Abhinav

please use the following code

// Calculate the new image dimensions
            System.Drawing.Bitmap originalBMP = new System.Drawing.Bitmap(FileUploadCtrlPatientPhoto.FileContent);

            int origWidth = originalBMP.Width;
            int origHeight = originalBMP.Height;
            int sngRatio = origWidth / origHeight;
            int newWidth = 100;

            if (sngRatio == 0)
                sngRatio = 1;

            int newHeight = newWidth / sngRatio;

            // Create a new bitmap which will hold the previous resized bitmap
            System.Drawing.Bitmap newBMP = new System.Drawing.Bitmap(originalBMP, newWidth, newHeight);                // Create a graphic based on the new bitmap
            System.Drawing.Graphics oGraphics = System.Drawing.Graphics.FromImage(newBMP);

            // Set the properties for the new graphic file
            oGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; 
            oGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;   
             // Draw the new graphic based on the resized bitmap
            oGraphics.DrawImage(originalBMP, 0, 0, 120, 130);

            // Save the new graphic file to the server
            newBMP.Save(UploadPath);//upload path is either set from the webconfig file or some where else

            // Once finished with the bitmap objects, we deallocate them.
            originalBMP.Dispose();
            newBMP.Dispose();
            oGraphics.Dispose();    

希望对您有帮助

谢谢

Hope this will help you

Thanks

这篇关于编码如何在asp.net中调整图像大小的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！