CODEWITHSUNDEEP
c#asp.net
Embedd_0913
Embedd_0913

Reputation: 16545

Displaying images from collection in asp.net

I have a collection of custom type which is as follows:

[DataContract]
public class PhotoDC
{
    public PhotoDC();

    [DataMember]
    public byte[] ImagebyteArray { get; set; }
    [DataMember]
    public string Name { get; set; }
}

I want to show all the items (image and name) on a web form , any idea which control I can use and how can I convert byte array to image ?

Upvotes: 1

Views: 840

Answers (2)

Jethro
Jethro

Reputation: 5916

I would use a Repeater control that has a label and Image controls with the Item template.

The following converts to and from and byteArray.

    /// <summary>
    /// Converts an Image to Byte array
    /// </summary>
    /// <param name="imageIn">Image to convert</param>
    /// <returns>byte array</returns>
    public static byte[] ImageToByteArray(Image imageIn)
    {
        MemoryStream ms = new MemoryStream();
        imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
        return ms.ToArray();
    }

    /// <summary>
    /// Converts an Byte array to and Image
    /// </summary>
    /// <param name="byteArrayIn">byre array</param>
    /// <returns>Image</returns>
    public static Image ByteArrayToImage(byte[] byteArrayIn)
    {
        MemoryStream ms = new MemoryStream(byteArrayIn);
        var returnImage = Image.FromStream(ms);
        return returnImage;
    }

This link shows you have to bind Memory stream to asp.net image control.

Upvotes: 0

Yiğit Yener
Yiğit Yener

Reputation: 5986

There is no built-in control in ASP.NET that you can directly assign a byte array to display images. What you can do is, simply write a custom HttpHandler that takes "Name" as an argument and sends the byte array as a binary response to the client with appropriate http response headers.

Here is an example of custom http handler. In this sample image is built from a file using a file stream.

Upvotes: 1

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