Error" Parameter is not valid " while converting Bytes into Image

Question

I am converting bytes into an image but I get an error

Parameter is not valid

I am pasting my code. Kindly check the code and suggested that was I am doing right or wrong.

Image arr1 = byteArrayToImage(Bytess);

This is the function.

public static Image byteArrayToImage(byte[] byteArrayIn)
{
        if (null == byteArrayIn || byteArrayIn.Length == 0)
            return null;

        MemoryStream ms = new MemoryStream(byteArrayIn);
        try
          {
            Process currentProcess1 = Process.GetCurrentProcess();
            Image returnImage = Image.FromStream(ms);
            return returnImage;
          }
        catch (Exception ex)
          {
            MessageBox.Show(ex.Message);
          }
    }

I applied many techniques and solutions but it did not work for me

Your answer would be appreciated.

Thanks

I saw that... deleted my original comment... So what line throws the error exactly? Also, the currentProcess1 doesn't appear to be used for anything (as a side note). — Jason Down
– Jason Down, Commented Jul 16, 2013 at 4:10
Image returnImage = Image.FromStream(ms); this lines gives an error that paramter is not valid — Umair Aslam
– Umair Aslam, Commented Jul 16, 2013 at 4:11
The byte array is likely not a valid image (cannot be converted so the Image.FromStream is failing). — Jason Down
– Jason Down, Commented Jul 16, 2013 at 4:14
Yes, it must be a recognized image format for Image.FromStream to work. If you are trying to convert a pdf you'll have to do it another way. Take a look at this question: stackoverflow.com/questions/6712557/… — Jason Down
– Jason Down, Commented Jul 16, 2013 at 4:19

Uwe Keim · Accepted Answer · 2020-01-27 07:45:49Z

13

try this

public Image byteArrayToImage(byte[] byteArrayIn)
{
    System.Drawing.ImageConverter converter = new System.Drawing.ImageConverter();
    Image img = (Image)converter.ConvertFrom(byteArrayIn);

    return img;
}

edited Jan 27, 2020 at 7:45

Uwe Keim

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answered Jul 16, 2013 at 4:35

sangram parmar

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4 Comments

Umair Aslam Over a year ago

No , It doesn`t Work . my bytes are 1120135

sangram parmar Over a year ago

like this byte[] array = { 68, 111, 116, 32, 78, 101, 116, 32, 80, 101, 114, 108, 115 };

Umair Aslam Over a year ago

Actually my byte are generated from dialog Box , so how can i write here , first i select image from dialog box and than pass that image bytes into this method

pookie Over a year ago

Omg. This saved me. I had already spent a couple hours with the old parameter is not valid exception. I was using the Image.FromStream method: stackoverflow.com/questions/457370/…

Ertyui · Accepted Answer · 2015-06-04 14:51:19Z

8

After trying many things I found a way which has a little bit more control. In this example you can specify the pixel format and copy the bytes to a Bitmap.

byte[] buffer = GetImageBytes();
var bitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb);
var bitmap_data = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
Marshal.Copy(buffer, 0, bitmap_data.Scan0, buffer.Length);
bitmap.UnlockBits(bitmap_data);
var result = bitmap as Image;

answered Jun 4, 2015 at 14:51

Ertyui

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Comments

O. Jones · Accepted Answer · 2017-07-03 21:51:41Z

-1

The problem is because, you are bringing it incorrectly from database. Try changing your code like this:

while (registry.Read())
{
   byte[] image = (byte[])registry["Image"];
}

edited Jul 3, 2017 at 21:51

O. Jones

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answered Jul 3, 2017 at 19:03

user8250086

1

Comments

Quantumleapr · Accepted Answer · 2018-02-21 10:34:03Z

-1

In my case I got the error since my base64 string had wrong encoding before calling Image.FromStream. This worked for me in the end:

byte[] bytes = System.Convert.FromBase64String(base64ImageString);

using (MemoryStream ms = new MemoryStream(bytes))
{
    var image = Image.FromStream(ms);
    image.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
}

answered Feb 21, 2018 at 10:34

Quantumleapr

12 bronze badges

Comments

Uwe Keim · Accepted Answer · 2020-01-27 07:46:01Z

-1

cmd.CommandText="SELECT * FROM `form_backimg` WHERE ACTIVE=1";

MySqlDataReader reader6= cmd.ExecuteReader();

if(reader6.Read())
{
   code4 = (byte[])reader6["BACK_IMG"];   //BLOB FIELD NAME BACK_IMG
}
reader6.Close();

MemoryStream stream = new MemoryStream(code4);   //code4 is a public byte[] defined on top                             
pictureBox3.Image = Image.FromStream(stream);

edited Jan 27, 2020 at 7:46

Uwe Keim

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answered May 7, 2017 at 18:06

Ankush Singhal

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Comments

Community · Accepted Answer · 2013-11-21 13:10:25Z

-2

try this,

public Image byteArrayToImage(byte[] byteArrayIn)
{
     Image returnImage = null;
     using (MemoryStream ms = new MemoryStream(byteArrayIn))    
     {   
         returnImage = Image.FromStream(ms);     
     }
     return returnImage;
}

edited Nov 21, 2013 at 13:10

CommunityBot

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answered Jul 16, 2013 at 10:30

Mohan Gopi

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2 Comments

Mohan Gopi Over a year ago

Hi Umair, I think your byte[] value is not in correct format. do one think, for checking take one image convert to byte[] after that pass this byte value to above coding. If it's converting correct image mean's the problem in your byte value. Let's know..

Liron Harel Over a year ago

having the same issue when downloading an image from S3. However, when using the file before uploading (after submited using a form) it works without an issue. Still can't figure this out

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