Image converted from binary data shows blank images

Question

0.00/5 (No votes)

See more:

Image Converted From binary data shows blank images

code for converting binary to image logic.:

C#

namespace OverHR.Common
{
    public class Common
    {
        public static Image byteArrayToImage(byte[] ba)
        {
            MemoryStream ms = new MemoryStream(ba);
            Image returnImage = Image.FromStream(ms);
            return returnImage;
        }


    }
}

code for displaying images from database:

C#

  @model List<OverHR.DAL.ScreenLog>

<table class="table table-striped">
    <tr>
        <th>Pic</th>

    </tr>

    <tbody>
        @foreach (var item in Model)
        {           
            var image=@item.ScreenPic;

            <tr>
                <td>
                    <img src="@OverHR.Common.Common.byteArrayToImage(image.ToArray())" width="320" height="240">
                </td>       
            </tr>
        }
    </tbody>
</table>

logic for getting image from the database:

C#

public List<ScreenLog> GetScreen()
        {
            using (OverSeasHRDbDataContext ctx1 = new OverSeasHRDbDataContext())
            {
                var lstScr = ctx1.ScreenLogs.Where(p => p.AttendanceId == 193).ToList();
                return lstScr;
            }
        }

What I have tried:

i have tried the snippet given above

Posted 2-Aug-16 3:16am

Saurabh Solanki

Updated 2-Aug-16 4:16am

Add a Solution

2 solutions

Solution 1

C#

public void SaveImage(string base64, string filenmae)
        {
            using (System.IO.MemoryStream ms = new System.IO.MemoryStream(Convert.FromBase64String(base64)))
            {
                try
                {
                    using (Bitmap bm2 = new Bitmap(ms))
                    {
                        string str1 = textBox2.Text;
                        bm2.Save(filename);
                    }
                }
                catch { }
            }
        }

Posted 2-Aug-16 3:33am

mahakaal

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

pdoxtader · Accepted Answer · 2016-08-02T04:16:00

Solution 2

These work:

C#

public Image ByteArrayToImage(byte[] ByteArray)
{
    return Image.FromStream(new MemoryStream(ByteArray));
}

public byte[] ImageToByteArray(ref Image NewImage)
{
    MemoryStream ImageStream = new MemoryStream();

    NewImage.Save(ImageStream, ImageFormat.Jpeg);
    return ImageStream.ToArray();
}

- Pete

Posted 2-Aug-16 4:16am

pdoxtader

Updated 2-Aug-16 8:27am

v2

Comments

Richard Deeming 2-Aug-16 14:24pm

The GetBuffer method returns the full internal buffer, which might contain extra blank bytes at the end.

Just use ToArray instead. :)
return ImageStream.ToArray();

pdoxtader 2-Aug-16 14:27pm

I was actually thinking about that after I posted it. Updating now...