How to show/handle Image from Database?

Create a generic handler like
// DBImageHandler.ashx

    <%@ WebHandler Language="C#" Class="DbImageHandler" %>

    using System;

    using System.Web;

    using System.IO;

    public class DbImageHandler : IHttpHandler

    {

    public void ProcessRequest(HttpContext context)

    {

    Int32 id;

    if (context.Request.Params["id"] != null)

        id = Convert.ToInt32(context.Request.Params["id"]);

    else

        throw new ArgumentException("No parameter specified");

    context.Response.ContentType = "image/jpeg";

    Stream strm = getDBImage(id);

    byte[] buffer = new byte[4096];

    int byteSeq = strm.Read(buffer, 0, 4096);

    while (byteSeq > 0)

    {

        context.Response.OutputStream.Write(buffer, 0, byteSeq);

        byteSeq = strm.Read(buffer, 0, 4096);

    }

    }

    public Stream getDBImage(int id)

    {

    System.Data.SqlClient.SqlDataAdapter da = new System.Data.SqlClient.SqlDataAdapter("SELECT photo FROM  Employee WHERE EmployeeID=" + id, System.Configuration.ConfigurationManager.ConnectionStrings["DBConStr"].ConnectionString);

    System.Data.DataTable dt = new System.Data.DataTable();

    da.Fill(dt);

    if (dt.Rows.Count == 0)

        return null;

    return new MemoryStream((byte[])dt.Rows[0]["photo"]);

    }

    public bool IsReusable

    {

    get

    {

        return false;

    }

    }

    }

Now you can use Image link as
DbImageHandler.ashx?id=1

Exmaple :

<img src="DbImageHandler.ashx?id=1" alt="Employee 1 Photo" width="400px" height="400px" />