Image Resize problem, Size is too much

Question

User366826142 posted

 I have picture size problem in Resizing , the code resize the picture correct but the problem is that, orignial file size is 277 kb but new Resize picture is almost 1 Mb. is there any one please help me.  code is following.

int width=800;

int width=600;

string srcImgPath="c:\file1.jpg";

 System.Drawing.Image oImg = System.Drawing.Image.FromFile(srcImgPath);                 
 System.Drawing.Image oThumbNail = new Bitmap(width, height,PixelFormat.Format24bppRgb);               

Graphics oGraphic = Graphics.FromImage(oThumbNail);

Rectangle oRectangle = new Rectangle(0,0,width,height);
oGraphic.DrawImage(oImg, oRectangle);

oThumbNail.Save(d:\file2.jpg);
oGraphic.Dispose();
oImg.Dispose();

Answer 1

User187056398 posted

The code you posted does not compile.

 

Answer 2

User366826142 posted

 here is complete successful code,& please make a file c:/file.jpg before testing.

 

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Drawing;
using System.Drawing.Imaging;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        int width=800;
        int height=600;
       
        System.Drawing.Image oImg = System.Drawing.Image.FromFile("c:/file.jpg");                
        System.Drawing.Image oThumbNail = new Bitmap(width, height,PixelFormat.Format24bppRgb); 
        Graphics oGraphic = Graphics.FromImage(oThumbNail);
        Rectangle oRectangle = new Rectangle(0,0,width,height);
        oGraphic.DrawImage(oImg, oRectangle);

        oThumbNail.Save("c:/resizefile.jpg");
        oGraphic.Dispose();

        oImg.Dispose();

    }
}

Answer 3

User187056398 posted

I don't know why that code isn't working correctly.  If you just want something that works, you can try this:

 

        Bitmap OriginalBM = new Bitmap(MapPath(@"~\images\april.jpg"));

        Size newSize = new Size(OriginalBM.Width / 2, OriginalBM.Height / 2);
        Bitmap ResizedBM = new Bitmap(OriginalBM, newSize);

        ResizedBM.Save(MapPath(@"~\images\april2.jpg"), ImageFormat.Jpeg);

 

Answer 4

User366826142 posted

 Thankyou very much for your code, i learnt 1 thing from your code, now my code is also correct,i was missing Imageformat Type.

 

oThumbNail.Save("c:/resizefile.jpg");

oThumbNail.Save("c:/resizefile.jpg",ImageFormat.Jpeg);