How to display multiple images from sql server 2005 into c#

Question

I STORED MULTIPLE IMAGES IN MY SQL SERVER 2005. NOW I WANT TO RETRIEVE PARTICULAR CATEGORY OF IMAGES INTO MULTIPLE PICTUREBOX AT RUNTIME IN C# WINDOWS APPLICATION. i used the following code in my final result form at form_Load using c# windows apps.. But it displays only one picture at run time pls help to me...

1. 
   
2.  
3.  
4. SqlConnection con = new SqlConnection(@"Data Source=ttt-PC;Initial Catalog=Query_Image;Integrated Security=True");
5.             SqlCommand cmdnew = new SqlCommand("select pic from Image_Category where IMG_Cat='" + searchvalue.ToString() + "'", con);
6.             con.Open();
7.           //  SqlDataReader dr = cmdnew.ExecuteReader();
8.             SqlDataAdapter da = new SqlDataAdapter(cmdnew);
9.             DataSet ds = new DataSet("Image_Category");
10.             byte[] mydata = new byte[0];
11.             da.Fill(ds, "Image_Category");
12.             DataRow myrow;
13.             //if (dr.HasRows)
14.             //{
15.             //    while (dr.Read())
16.             //    {
17.  
18.             for (int i = 0; i < 2; i++)
19.  
20.             // while (i <= dt.Rows.Count)
21.  
22.             {
23.  
24.                 myrow= ds.Tables["Image_Category"].Rows[i];
25.                 mydata = (byte[])ds.Tables[0].Rows[i]["pic"];
26.                 str[i]=new MemoryStream(mydata);
27.  
28.                 pbx[i]=new PictureBox();
29.                  pbx[i].Size = new Size(150, 150);
30.                  pbx[i].SizeMode = PictureBoxSizeMode.StretchImage;
31.                 pbx[i].BackgroundImage = Image.FromStream(str[i]);
32.                  pbx[i].Visible = true;
33.                  //this.Controls.Add(pbx[i]);
34.                 }
35.  

PLEASE TELL IS IT ANY WRONG WITH THIS CODE?
OR SUGGEST NEW CODE TO ME PLEASE..

its very urgent