Store image in database and retrieve it

Question

My code for inserting image in database is as follows:

MemoryStream ms =new MemoryStream();
byte[] PhotoByte=null;
PhotoByte=ms.ToArray();
pictureBox1.Image.Save         


        

Answer 1

It is possible of course to store your images in db. However it is not recommended. It is better to store them in a file system.

Your code is a bit messy. The following is a better example.

MemoryStream ms =new MemoryStream(); 
byte[] PhotoByte=null; 
pictureBox1.Image.Save(ms, ImageFormat.Jpeg); 
PhotoByte =ms.ToArray(); 
// I'm not sure whether you are able to create an sql by simply concating the string
Str = "insert into Experimmm Values('@PhotoBytes','@MyTextValue')"; 
// You have to parametrize your query
cmd.Parameters.AddWithValue("PhotoBytes", PhotoByte);
// This also helps you to avoid syntactical corruption in case of ' and sql injection
cmd.Parameters.AddWithValue("MyTextValue", textBox1.Text );
Conn.Open(); 
cmd.Connection = Conn; 
cmd.CommandText = Str; 
cmd.ExecuteNonQuery(); 
Conn.Close(); 

When you retrieve you could use a binary writer in some handler

namespace TestNS
{
   public class MyHttpHandler : IHttpHandler
   {
      // Override the ProcessRequest method.
      public void ProcessRequest(HttpContext context)
      {
         // Your preparations, i.e. querystring or something
         var conn = new SqlConnection("Your connectionstring");
         var command = new SqlCommand("Your sql for retrieval of the bytes", conn);
         conn.Open();
         var data = (Byte[])command.ExecuteScalar();
         conn.Close();
         context.Response.BinaryWrite(data);      }

      public Boolean IsReusable
      {
         get { return false; }
      }
   }
}