Image Resizing in Asp.net c# Dynamically

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Dear All,

I want re-size one image into Multiple size Images like thumb_image(Width 48px height 64px),Small_image(Width 240px height 320px),big_image(Width 1080px high 1440px). I am uploading image using File Upload in asp.net c#. on Submit button I want to create above size image dynamically & save in my specific folder.

Please provide me help or sample code for the same..

Thanks Advance

Posted 4-Mar-13 20:37pm

Govind_sk

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3 solutions

Solution 1

check these codeproject links

Resizing image dynamically using C#[^]

Dynamically resize uploaded images & save in PNG format[^]

Posted 4-Mar-13 20:43pm

Azziet

Solution 2

Please look at the codes in the following sites: Link 1[^]
Link 2[^]
Link 3[^]
In your upload control call these methods for different ratios for your images.

Good luck,
OI

Posted 4-Mar-13 20:44pm

Orcun Iyigun

Updated 4-Mar-13 20:45pm

v2

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Taha Akhtar · Accepted Answer · 2013-03-04T20:55:00

int NewWidth = 100;
        int NewHeight = 74;
        // FileStream fs = File.Open(, FileMode.Open);
        StreamReader sr = new StreamReader(HttpContext.Current.Server.MapPath(path) + guid + "." + fileName.Split('.')[fileName.Split('.').Length - 1]);
        System.Drawing.Bitmap bmpOut = new System.Drawing.Bitmap(NewWidth, NewHeight);
        System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmpOut);
        g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
        g.FillRectangle(System.Drawing.Brushes.White, 0, 0, NewWidth, NewHeight);
        g.DrawImage(new System.Drawing.Bitmap(sr.BaseStream), 0, 0, NewWidth, NewHeight);
        MemoryStream stream = new MemoryStream();

        bmpOut.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);

        String saveImagePath = path + guid + "_thumbnail.jpg";
        bmpOut.Save(HttpContext.Current.Server.MapPath(saveImagePath), System.Drawing.Imaging.ImageFormat.Jpeg);
        g.Dispose();
        bmpOut.Dispose();
        sr.Dispose();

image geneation