Trying to ReSize Each Uploaded Image to 350px ?? : The Official Microsoft ASP.NET Forums

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prontonet

Member

243 Points

484 Posts

Trying to ReSize Each Uploaded Image to 350px ??

Aug 06, 2012 05:19 AM|LINK

Hi,

I have 4 file upload controls on my aspx and the code below collects all files on the page and uploads to directory.

What I want to happen is that this code automatically resets the Image Height ONLY to 350px for each one??

could you add code to below to do this very helpful. Thank you.

        HttpFileCollection uploadedFiles = Request.Files;

        for (int i = 0; i < uploadedFiles.Count; i++)
        {

            HttpPostedFile file = uploadedFiles[i];
            string fileExt = Path.GetExtension(file.FileName).ToLower();
            string fileName = Path.GetFileName(file.FileName);
            if (fileName != string.Empty)
            {
                try
                {
                    if (fileExt == ".jpg" || fileExt == ".jpeg" || fileExt == ".JPEG" || fileExt == ".JPG")
                        if (!File.Exists(Server.MapPath("/Over8/" + newUser)))
                        {

                            Directory.CreateDirectory(Server.MapPath("/Over8/"));

                            const string BrochureDirectory = "/Over8/";
                            string brochurePath = BrochureDirectory + fileName;
                            string fileNameWithoutExtension =
                                System.IO.Path.GetFileNameWithoutExtension(file.FileName);

                            int iteration = 1;

                            while (System.IO.File.Exists(Server.MapPath(brochurePath)))
                            {
                                brochurePath = string.Concat(BrochureDirectory, fileNameWithoutExtension,
                                    "-", iteration, ".jpg");
                                iteration++;
                            }

                            file.SaveAs(Server.MapPath(brochurePath));

                            FileUploadObj.InsertParameters["ImageUrl"].DefaultValue = brochurePath.ToString();
                            FileUploadObj.InsertParameters["ModelId"].DefaultValue = newUserId.ToString();
                            FileUploadObj.Insert();

                        }

                        else
                        {

                        }
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }

        }

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sanddy19

Participant

1058 Points

144 Posts

Re: Trying to ReSize Each Uploaded Image to 350px ??

Aug 06, 2012 05:33 AM|LINK

Try reading these links

http://www.4guysfromrolla.com/articles/012203-1.aspx

http://www.glennjones.net/2005/10/high-quality-dynamically-resized-images-with-dot-net/

Regards,
Saurabh Nandu
Systenics Solutions
My Blog

Reply

prontonet

Member

243 Points

484 Posts

Re: Trying to ReSize Each Uploaded Image to 350px ??

Aug 06, 2012 07:58 PM|LINK

hi

thanks will have a look but a solution in c -sharp would be best for me - and if possible using existing code.

best

Reply

Primillo

Star

8723 Points

1677 Posts

Re: Trying to ReSize Each Uploaded Image to 350px ??

Aug 06, 2012 10:15 PM|LINK

This works for me in a lot projects:

using System.Drawing;
using System.IO;

protected void Button1_Click(object sender, EventArgs e)
    {
        resizeImage();
    }
public void resizeImage()
    {
        string fName, trgDir;
        string MyImageExt = Path.GetExtension(FileUpload1.PostedFile.FileName);
        string MyNewGuid = Guid.NewGuid().ToString();
        fName = FileUpload1.FileName;
        fName = fName.ToLower();
        trgDir = Server.MapPath("~/Uploads/");

        Bitmap origBMP = new Bitmap(FileUpload1.FileContent);
        string temp = "450";
        int max = int.Parse(temp);
        if (origBMP.Width <= max)
        {
            origBMP.Save(trgDir + MyNewGuid + MyImageExt);
            return;
        }
        else
        {
            int origWidth = origBMP.Width;
            int origHeight = origBMP.Height;
            int newWidth = max;
            int newHeight = newWidth * origHeight / origWidth;

            Bitmap newBMP = new Bitmap(origBMP, newWidth, newHeight);
            Graphics objGra = Graphics.FromImage(newBMP);
            objGra.DrawImage(origBMP, new Rectangle(0, 0, newBMP.Width, newBMP.Height), 0, 0, origWidth, origHeight, GraphicsUnit.Pixel);
            objGra.Dispose();
            newBMP.Save(trgDir + MyNewGuid + MyImageExt);
        }
        Bitmap origBMPTH = new Bitmap(FileUpload1.FileContent);
        string tempTH = "250";
        int maxTH = int.Parse(tempTH);
        if (origBMPTH.Width <= maxTH)
        {
            origBMPTH.Save(trgDir + MyNewGuid + "TH" + MyImageExt);
            return;
        }
        else
        {
            int origWidthTH = origBMPTH.Width;
            int origHeightTH = origBMPTH.Height;
            int newWidthTH = maxTH;
            int newHeightTH = newWidthTH * origHeightTH / origWidthTH;

            Bitmap newBMPTH = new Bitmap(origBMPTH, newWidthTH, newHeightTH);
            Graphics objGraTH = Graphics.FromImage(newBMPTH);
            objGraTH.DrawImage(origBMPTH, new Rectangle(0, 0, newBMPTH.Width, newBMPTH.Height), 0, 0, origWidthTH, origHeightTH, GraphicsUnit.Pixel);
            objGraTH.Dispose();
            newBMPTH.Save(trgDir + MyNewGuid + "TH" + MyImageExt);
        }
    }

Let me know if you have any issue!

Best Regards
Primillo
http://www.facebook.com/programandopuntonet