Displaying Binary Image

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Hi all,

I have a SQL2008 table containing varbinary(max) data the table structure looks like this:

SQL

[ID] [nvarchar](50) NOT NULL,
   [Name] [nvarchar](100) NOT NULL,
   [Type] [nvarchar](100) NOT NULL,
   [Size] [nchar](10) NULL,
   [Date_Uploaded] [date] NULL,
   [Time_Uploaded] [nchar](10) NULL,
   [Data] [varbinary](max) NULL,
CONSTRAINT [PK_Files] PRIMARY KEY CLUSTERED
   [ID] ASC,
   [Name] ASC

I have my upload tool working well, but I am unable to bring the data back to be displayed in a grid view.
This is the current code I have to do that.

VB

<asp:GridView ID="grdImageData" runat="server" AutoGenerateColumns="False" DataKeyNames="Data" DataSourceID="DS_Images_View" Width="600px" CellPadding="4" ForeColor="Black" GridLines="Vertical" 
            BackColor="White" BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px">
                    <FooterStyle BackColor="#CCCC99" />
                    <RowStyle BackColor="#F7F7DE" />
                    <Columns>
                    <asp:TemplateField HeaderText="Icon">
                        <ItemTemplate>
                        <asp:Image ID="Image" runat="server" ImageUrl='<%# Eval("Data") %>' AlternateText='<%# Eval("Type") %>' Width= "300" ImageAlign="Left"/>
                        </ItemTemplate>
                        </asp:TemplateField>
                    </Columns>
                    <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" />
                    <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
                    <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
                    <AlternatingRowStyle BackColor="White" />
                </asp:GridView>

Could anyone please help me further on this?

Posted 19-Jan-12 1:04am

Caz1224

Updated 19-Jan-12 2:35am

Anuja Pawar Indore

v2

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RDBurmon · Answer 1 · 2012-01-19T01:19:00

C#

using System;
using System.Web;
using System.Configuration;
using System.Data.SqlClient;

public class Handler : IHttpHandler {
 
public void ProcessRequest (HttpContext context) 
{
SqlConnection con = new SqlConnection();
con.ConnectionString = ConfigurationManager.ConnectionStrings
 ["ConnectionString"].ConnectionString;

// Create SQL Command 
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "Select ImageName,Image from Images" + 
 " where ID =@ID";
cmd.CommandType = System.Data.CommandType.Text;
cmd.Connection = con;

SqlParameter ImageID = new SqlParameter
 ("@ID", System.Data.SqlDbType.Int);
ImageID.Value = context.Request.QueryString["ID"];
cmd.Parameters.Add(ImageID);
con.Open();
SqlDataReader dReader = cmd.ExecuteReader();
dReader.Read();
context.Response.BinaryWrite((byte[])dReader["Image"]);
dReader.Close();
con.Close();
}

Prasad_Kulkarni · Answer 2 · 2012-01-19T01:23:00

Solution 2

Hi,
Get the best examples with source code:
CodeProject.com[^]

Posted 19-Jan-12 1:23am

Prasad_Kulkarni