Out of Memory Error when Creating thumbnail of image with size more than 7000 pixcel

Question

User-615990677 posted

Hi Guies, I was doing wonders till I stucked with this error, can any body help.

Issue is I am creating thumbnail of image on the fly and showing on my pages. When the image height/width exceed 7000 pixcel I get out of memory error. 

I am attaching the code I am using

 

using System;

using System.Data;

using System.Configuration;

using System.Collections;

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 CreateThumbNail : System.Web.UI.Page

{

private void Page_Load(object sender, System.EventArgs e)

{

string Image = Request.QueryString["Image"];if (Image == null)

{

 this.ErrorResult();

return;

}

 

 

string sSize = Request["Size"];

int Size = 120;

if (sSize != null)Size = Int32.Parse(sSize);

 

 

string Path = Server.MapPath(Request.ApplicationPath) + "\\" + Image;Bitmap bmp = CreateThumbnail(Path, Size, Size);

 

 

if (bmp == null)

{

Response.Write("Bmp is null");

Response.End();

// this.ErrorResult();

return;

}

 

 

 

// Put user code to initialize the page here

Response.ContentType = "image/jpeg";

bmp.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);

bmp.Dispose();

}

 

 

private void ErrorResult()

{

Response.Clear();

Response.StatusCode = 404;

Response.End();

}

 

 

///

/// Creates a resized bitmap from an existing image on disk.

public static Bitmap CreateThumbnail(string lcFilename, int lnWidth, int lnHeight)

{

System.Drawing.Bitmap bmpOut = null;

//try

//{

Bitmap loBMP = new Bitmap(lcFilename);

ImageFormat loFormat = loBMP.RawFormat;

 

decimal lnRatio;

int lnNewWidth = 0;

int lnNewHeight = 0;

 

 

//*** If the image is smaller than a thumbnail just return it

if (loBMP.Width < lnWidth && loBMP.Height < lnHeight)return loBMP;

 

 

 

 

if (loBMP.Width > loBMP.Height)

{

lnRatio = (decimal)lnWidth / loBMP.Width;

lnNewWidth = lnWidth;

decimal lnTemp = loBMP.Height * lnRatio;lnNewHeight = (int)lnTemp;

}

else

{

lnRatio = (decimal)lnHeight / loBMP.Height;

lnNewHeight = lnHeight;

decimal lnTemp = loBMP.Width * lnRatio;

lnNewWidth = (int)lnTemp;

}

 

 

bmpOut = new Bitmap(lnNewWidth, lnNewHeight);

Graphics g = Graphics.FromImage(bmpOut);

g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;

g.FillRectangle(Brushes.White, 0, 0, lnNewWidth, lnNewHeight);

g.DrawImage(loBMP, 0, 0, lnNewWidth, lnNewHeight);

 

loBMP.Dispose();

//}

//catch

//{

// return null;

//}

 

 

return bmpOut;

}

}

 

Answer 1

User-1509636757 posted

string Path = Server.MapPath(Request.ApplicationPath) + "\\" + Image;

 

check this path validity. i mean whether file is exists there or not..

GDI+ tends to throw OutOfMemoryExceptions whenever something goes wrong event if that's got nothing to do with a memory problem. I *think* that you might get an OutOfMemoryException if the image is corrupted or has an unsuported format. I would investigate this first.

 Referenced Link > Windows Service - Out of memory - .NET

hope it helps./.

Answer 2

User-615990677 posted

Thanks for reply

But the image does exist. If I just decrease the size of the image, thumbnail will start genrating. All the images with size more than 7000 pixcels the error arises.

Answer 3

User-1509636757 posted

 can you please look at the innerexception and post the details?

Answer 4

User-615990677 posted

 Can you please elobarate little more, well I am giving the line specific error

 

Exception Details: System.OutOfMemoryException: Out of memory.

g.DrawImage(loBMP, 0, 0, Convert.ToInt32(CurrentimgWidth), Convert.ToInt32(CurrentimgHeight))

IS this what you were asking for.