How to Convert Image in to the byte[]...............

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I have Image and I have convert into the byte... same as Image visible in notpad...that i want.......

C#

public byte[] imageToByteArray(System.Drawing.Image imageIn)
{
 MemoryStream ms = new MemoryStream();
 imageIn.Save(ms,System.Drawing.Imaging.ImageFormat.Gif);
 return  ms.ToArray();
}

that i know but how to pass image in above code,can't understand that code,,can anyone help me please....

Posted 25-Oct-13 3:14am

Ankit Gajera

Updated 25-Oct-13 3:18am

v2

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joshrduncan2012 25-Oct-13 9:17am

Ok, so what's your question?

Nandakishore G N 25-Oct-13 9:26am

System.Drawing.Image useruploadedimage = System.Drawing.Image.FromStream(FileUpload.PostedFile.InputStream);
will get you the image pass as parameter and try

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Pratik Bhuva · Answer 1 · 2013-10-25T04:47:00

Once i wanted functionality similler to your problem and i have done something like this.
This is not exact solution to your problem but it may give you an idea.

C#

private void btnBrowse_Click(object sender, EventArgs e)
{

        OpenFileDialog ofd = new OpenFileDialog();
        ofd.Title = "choose your file";

        if (ofd.ShowDialog() == DialogResult.OK)
        {
           filepath = ofd.FileName.ToString();
        }
        long size = (new FileInfo(filepath).Length);
        FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.ReadWrite);
        byte[] data = new byte[size];

        try
        {
           fs.Read(data, 0, (int)size);
           //This read stream from FileStream fs and write to byte array data.
           //Here you Get the data[] byte array. now you can use it as per your requirement
        }
        catch (Exception ex)
        {
            MessageBox.Show("error in file read..." + ex.ToString());
        }
        finally
        {
            fs.Close();
            fs.Dispose();
        }

        MemoryStream ms = new MemoryStream();
        ms.Write(data, 0, (int)size);
        //Here you can take new file and add this memory stream to it.

        destPath = Application.StartupPath.ToString() + "\\images";
        destPath = Path.Combine(destPath, Path.GetFileName(filepath));
        File.Copy(filepath, destPath);

}

Hope This help

Marvin Ma · Answer 2 · 2013-10-25T03:18:00

Solution 1

Try this to convert image to byte[]:

C#

public byte[] ConvertImageToByteArray(Image imageIn)
        {
            var memoryStream = new MemoryStream();
            imageIn.Save(memoryStream, ImageFormat.Jpeg);
            memoryStream.Close();
            return memoryStream.ToArray();
        }

And this to convert it back to Image if you need:

C#

public Image ConvertByteArrayToImage(byte[] byteArrayIn)
        {
            var memoryStream = new MemoryStream(byteArrayIn);
            var returnImage = Image.FromStream(memoryStream);
            memoryStream.Close();
            return returnImage;
        }

Hope it helps :)

Posted 25-Oct-13 3:18am

Marvin Ma

Comments

Ankit Gajera 25-Oct-13 9:23am

i know that but how to pass imagename into the imagein...does not convert it...

Marvin Ma 25-Oct-13 9:26am

Where do you get the Image from?
From your hard disk?

Ankit Gajera 25-Oct-13 9:29am

get image from my Application.startup page....like Application.StartUp.

Marvin Ma 25-Oct-13 9:31am

Ok, if it is really an Image you just can invoke your method and pass this image...
imageToByteArray(yourImage)

Ankit Gajera 25-Oct-13 9:33am

get already image name in textbox ...and that i want to pass in the imagein.
btn_Click event ()
{
??? imaagein = txtimg.text;
ConvertImageToByteArray(imageIn);
}

Sergey Alexandrovich Kryukov 25-Oct-13 10:29am

What name?!!! There is no such thing. You asked about an image, you got the answer.
—SA

Sergey Alexandrovich Kryukov 25-Oct-13 10:28am

Serialized. A 5 :-)
—SA