Get multiple images from server asp.net, c#, sql

The upload aspx page 
<%@ Page Language="c#" Src="UploadImage.aspx.cs" Inherits="DBImages.UploadImage"
    MasterPageFile="~/YourAgent2.master" AutoEventWireup="true" %>
 
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <h3>
        Upload your Image</h3>
    Enter A Friendly Name<input type="text" id="txtImgName" runat="server" />
    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Required"
        ControlToValidate="txtImgName"></asp:RequiredFieldValidator>
    <br />
    Select File To Upload:
    <input id="UploadFile" type="file" runat="server" />
    <asp:Button ID="UploadBtn" Text="Upload Me!" OnClick="UploadBtn_Click" runat="server">
    </asp:Button>
    <br />
    <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
    <br />
    <br />
    <br />
</asp:Content>
 
Code behind 
 
 public void UploadBtn_Click(object sender, System.EventArgs e)
        {
            if (Page.IsValid) //save the image
            {
                Stream imgStream = UploadFile.PostedFile.InputStream;
                int imgLen = UploadFile.PostedFile.ContentLength;
                string img_contenttype = UploadFile.PostedFile.ContentType;
                string img_name = txtImgName.Value;
                byte[] img_data = new byte[imgLen];
                int n = imgStream.Read(img_data, 0, imgLen);
 
                String idis = Request.QueryString["id"];
                int business_id = System.Convert.ToInt32(idis);
 
                int RowsAffected = SaveToDB(img_name, img_data, img_contenttype, business_id);
                if (RowsAffected > 0)
                {
                    TextBox TextBox2 = new TextBox();
                    TextBox2.Text = "The Image was Saved";
                    /*Response.Write("<BR>The Image was saved");*/
                }
                else
                {
                    Response.Write("<BR>An error occurred uploading the image");
                }
 
            }
        }
 
 
        private int SaveToDB(string img_name, byte[] img_data, string img_contenttype, int business_id)
        {
            //use the web.config to store the connection string
            SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["tempdbConnectionString"].ConnectionString);
            SqlCommand command = new SqlCommand("INSERT INTO Image (img_name, img_data, img_contenttype, business_id) VALUES ( @img_name, @img_data,@img_contenttype,@business_id)", connection);
 
            SqlParameter param0 = new SqlParameter("@img_name", SqlDbType.VarChar, 50);
            param0.Value = img_name;
            command.Parameters.Add(param0);
 
            SqlParameter param1 = new SqlParameter("@img_data", SqlDbType.Image);
            param1.Value = img_data;
            command.Parameters.Add(param1);
 
            SqlParameter param2 = new SqlParameter("@img_contenttype", SqlDbType.VarChar, 50);
            param2.Value = img_contenttype;
            command.Parameters.Add(param2);
 
            SqlParameter param3 = new SqlParameter("@business_id", SqlDbType.Int, 4);
            param3.Value = business_id;
            command.Parameters.Add(param3);
 
            connection.Open();
            int numRowsAffected = command.ExecuteNonQuery();
            connection.Close();
 
            return numRowsAffected;
        }
    }
 
GetImage.aspx
<%@ Page Language="C#" MasterPageFile="~/YourAgent2.master" AutoEventWireup="true" CodeFile="GetImage.aspx.cs" Inherits="GetImage" Title="Untitled Page" %>
 
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
</asp:Content>
 
CODE BEHIND 
 
 protected void Page_Load(object sender, EventArgs e)
    {
        System.Data.SqlClient.SqlDataReader Reader = null;
        string ImageIdentity = Request.QueryString["id"].ToString();
        SqlConnection sqlConnection = new SqlConnection(@"Data Source=ITDEV02\sqlexpress;Initial Catalog=tempdb;Integrated Security=True;");
        sqlConnection.Open();
        SqlCommand sqlCommand = new SqlCommand("Select img_data,img_contenttype from Image where business_id=" + ImageIdentity, sqlConnection);
        Reader = sqlCommand.ExecuteReader(CommandBehavior.CloseConnection);
        Reader.Read();
        Response.Clear();
        Response.ContentType = Reader["img_contenttype"].ToString();
 
        /// Read the database image into a byte array
        byte[] byteArray = (byte[])Reader["img_data"];
        if (Request.QueryString["ThumbNail"] == null)
        {
            /// Move the byte array into a memory stream. This is an intermediate step to convert the byte array into
            /// a system.Drawing.Image
            System.IO.MemoryStream mstream = new System.IO.MemoryStream(byteArray, 0, byteArray.Length);
            /// The System.Drawing image allows us to retrieve properties of the image (height width for example)
            System.Drawing.Image dbImage = System.Drawing.Image.FromStream(new System.IO.MemoryStream(byteArray));
            /// Create a new image - a thumbnail by changing the height and width
            System.Drawing.Image thumbnailImage = dbImage.GetThumbnailImage(100, 100, null, new System.IntPtr());
            /// Overwrite the memory stream with the Thumbnail Image getting the image format from the database image
            thumbnailImage.Save(mstream, dbImage.RawFormat);
            /// Convert the memory stream into a byte array
            Byte[] thumbnailByteArray = new Byte[mstream.Length];
            mstream.Position = 0;
            mstream.Read(thumbnailByteArray, 0, Convert.ToInt32(mstream.Length));
            Response.BinaryWrite(thumbnailByteArray);
        }
        else
        {
            Response.BinaryWrite(byteArray);
        }
        //      Response.BinaryWrite(thumbnailByteArray);
 
    }
 
page called BUY.aspx to display in a datagrid 
<%@ Page Language="C#" MasterPageFile="~/YourAgent2.master" AutoEventWireup="true"
    CodeFile="Buy.aspx.cs" Inherits="Buy" Title="Untitled Page" %>
 
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <asp:DataGrid ID="DataGrid1" runat="server" AutoGenerateColumns="False">
        <Columns>
            <asp:BoundColumn DataField="ImageIdentity" HeaderText="ImageIdentity" Visible="False">
            </asp:BoundColumn>
            <asp:BoundColumn DataField="img_name" HeaderText="Image Name"></asp:BoundColumn>
            <asp:BoundColumn DataField="img_contenttype" HeaderText="Image Type"></asp:BoundColumn>
            <asp:TemplateColumn HeaderText="Image">
                <ItemTemplate>
                    <a href='<%# "getImage.aspx?ThumbNail=\"N\"&ID=" + DataBinder.Eval(Container.DataItem, 
                   "ImageIdentity")  %>'>
                        <img runat="server" src='<%# "getImage.aspx?ID=" + DataBinder.Eval(Container.DataItem, 
                   "ImageIdentity")%>' id="Img1" /></a>
                </ItemTemplate>
            </asp:TemplateColumn>
        </Columns>
    </asp:DataGrid>
</asp:Content>
 
CODE BEHIND 
 
 private void Page_Load(object sender, System.EventArgs e)
    {
        System.Data.SqlClient.SqlDataReader Reader = null;
        SqlConnection SqlConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["tempdbConnectionString"].ConnectionString);
        SqlConnection.Open();
        SqlCommand sqlCommand = new SqlCommand("GetImages", SqlConnection);
        sqlCommand.CommandType = CommandType.StoredProcedure;
        Reader = sqlCommand.ExecuteReader(CommandBehavior.CloseConnection);
        DataGrid1.DataSource = Reader;
        DataGrid1.DataBind();
    }