fileuploadcontrol

prathyusha

13y1.7kLearn iOS Programming

hi,

by using below this code

if (FileUpload1.HasFile)

{

string savePath = Server.MapPath("~/memberspic/");

string fileName = FileUpload1.FileName;

string pathToCheck = savePath + fileName;

Random rm = new Random();

TextBox txtpass = new TextBox();

txtpass.Text = rm.Next(257871, 498371).ToString();

Guid g = Guid.NewGuid();

string extension = Path.GetExtension(FileUpload1.PostedFile.FileName);

FileUpload1.SaveAs(Server.MapPath("~/memberspic/") + "img_pk" + txtpass.Text.ToString() + extension);

string te;

te = "~/memberspic/" + "img_pk" + txtpass.Text.ToString() + extension;

impath = pathToCheck;

cmd.Parameters.AddWithValue("@ProfilePicture", te);

}

we can save the image files in folder with this path like ~/memberspic/img_pk368811.jpg but the file size is very large.

how to compress that image file before save to folder.

please help me

it's very important to me.

11 Replies

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Iftikar Hussain13y ago
Accepted answer
Hi,
You need to change default maximum upload size in web.config file.

where
maxRequestLength - Indicates the maximum file upload size supported by ASP.NET. This limit can be used to prevent denial of service attacks caused by users posting large files to the server. The size specified is in kilobytes. The default is 4096 KB (4 MB).
and
executionTimeout - Indicates the maximum number of seconds that a request is allowed to execute before being automatically shut down by ASP.NET.

Regards,
Ifitkar

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0
Sanjeeb Lenka13y ago
Accepted answer
Main thing fileupload control default file size is 4mb if you
upload more than 4mb
it will not take that . so you have to change it in web.config

within tag add the below code

you can increase or decrease the maxRequestLength according
to your requirement memory size is in bytes
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prathyusha13y ago
hi Iftikar Hussain,

i have doubt regarding using this code.

Random rm = new Random();
TextBox txtpass = new TextBox();
txtpass.Text = rm.Next(257871, 498371).ToString();
string extension = System.IO.Path.GetExtension(FileUpload1.FileName);
if (FileUpload1.FileBytes.Length > 62160)
{

if ((extension.ToUpper() == ".JPG") | (extension.ToUpper() == ".GIF"))
{
System.Drawing.Image imageToBeResized = System.Drawing.Image.FromStream(FileUpload1.PostedFile.InputStream);
int imageHeight = imageToBeResized.Height;
int imageWidth = imageToBeResized.Width;
int maxHeight = 120;
int maxWidth = 160;
imageHeight = (imageHeight * maxWidth) / imageWidth;
imageWidth = maxWidth;

if (imageHeight > maxHeight)
{
imageWidth = (imageWidth * maxHeight) / imageHeight;
imageHeight = maxHeight;
}

Bitmap bitmap = new Bitmap(imageToBeResized, imageWidth, imageHeight);

FileUpload1.SaveAs(Server.MapPath("~/memberspic/") + "img_pk" + txtpass.Text.ToString() + extension);

var path = "~/memberspic/" + "img_pk" + txtpass.Text.ToString() + extension;

bitmap.Save(Server.MapPath(path.ToString()));
bitmap.Dispose();
cmd.Parameters.AddWithValue("@ProfilePicture", path);
}

}
else
{
string savePath = Server.MapPath("~/memberspic/");
string fileName = FileUpload1.FileName;
string pathToCheck = savePath + fileName;
FileUpload1.SaveAs(Server.MapPath("~/memberspic/") + "img_pk" + txtpass.Text.ToString() + extension);
string te1;
te1 = "~/memberspic/" + "img_pk" + txtpass.Text.ToString() + extension;
impath = pathToCheck;
cmd.Parameters.AddWithValue("@ProfilePicture", te1);
}

when i select 4.06 size file error will be displayed once check it.

please help me
0
Iftikar Hussain13y ago
do like this

if (FileUpLoad1.FileBytes.Length > 92160)
{
string strExtension = System.IO.Path.GetExtension(FileUpLoad1.FileName);
if ((strExtension.ToUpper() == ".JPG") | (strExtension.ToUpper() == ".GIF"))
{
System.Drawing.Image imageToBeResized = System.Drawing.Image.FromStream(FileUpLoad1.PostedFile.InputStream);
int imageHeight = imageToBeResized.Height;
int imageWidth = imageToBeResized.Width;
int maxHeight = 120;
int maxWidth = 160;
imageHeight = (imageHeight * maxWidth) / imageWidth;
imageWidth = maxWidth;

if (imageHeight > maxHeight)
{
imageWidth = (imageWidth * maxHeight) / imageHeight;
imageHeight = maxHeight;
}

Bitmap bitmap = new Bitmap(imageToBeResized, imageWidth, imageHeight);
var path = Server.MapPath("images");
path = path + "\\imgtest.jpg";
if (File.Exists(path))
File.Delete(path);
bitmap.Save(path);
bitmap.Dispose();
}
}

Regards,
Iftikar

Remember to click "Mark as Answer" on the post, if it helps you.
0
prathyusha13y ago
hi,

here i'm attaching one file.
when uploading that file size will be increased.
when i upload the file ( dimenssions 1024x768 ) this file will be compressed .it's working correctly
but first file size will be increased.no need increase.

please help me
0
Sanjeeb Lenka13y ago
hi ,

in my attached code just modify the button click event with below code:

protected void btnsave_Click(object sender, EventArgs e)
    {
        string filename = Path.GetFileName(fileupload1.PostedFile.FileName);
        string targetPath = Server.MapPath("Images/" + filename);
        Stream strm = fileupload1.PostedFile.InputStream;
        var targetFile = targetPath;
        int imgSize = fileupload1.PostedFile.ContentLength;
        //here i am checking the image size if the size is greater than 1mb then compress otherwise direct save
        //image size is in byte you can specify your image size here i am talking 90kb if more than 90kb it will compress or leave
        if (imgSize > 92160)

            //Based on scalefactor image size will vary
            GenerateThumbnails(0.5, strm, targetFile);
        else
            fileupload1.SaveAs(Server.MapPath("~/Images//") + filename);

        BindDataList();
    }
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prathyusha13y ago
hi, i already used that file.

but when i uploading small file like 10 kb. that file also compressed.
but i need only large file like 90kb,or 4mb files only please help me
0
Iftikar Hussain13y ago
Hi,
You can do like this

string strExtension = System.IO.Path.GetExtension(FileUpLoad1.FileName);
if ((strExtension.ToUpper() == ".JPG") | (strExtension.ToUpper() == ".GIF"))
{
System.Drawing.Image imageToBeResized = System.Drawing.Image.FromStream(FileUpLoad1.PostedFile.InputStream);
int imageHeight = imageToBeResized.Height;
int imageWidth = imageToBeResized.Width;
int maxHeight = 120;
int maxWidth = 160;
imageHeight = (imageHeight * maxWidth) / imageWidth;
imageWidth = maxWidth;

if (imageHeight > maxHeight)
{
imageWidth = (imageWidth * maxHeight) / imageHeight;
imageHeight = maxHeight;
}

Bitmap bitmap = new Bitmap(imageToBeResized, imageWidth, imageHeight);
var path = Server.MapPath("images");
path = path + "\\imgtest.jpg";
if (File.Exists(path))
File.Delete(path);
bitmap.Save(path);
bitmap.Dispose();
}

Regards,
Iftikar

Remember to click "Mark as Answer" on the post, if it helps you.
0
Sanjeeb Lenka13y ago
Hi Prathyusha,

i attached a file check that . if any doubt reply.
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prathyusha13y ago
by using above link if i upload very small size file ,that file also compressed.

when the file size is very small no need to compress. please help me
0
Sanjeeb Lenka13y ago
check this link

http://www.aspdotnet-suresh.com/2011/05/how-to-resize-size-image-without-losing.html
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