How to convert Byte Array into Image Url

[pavanip]

Hi,

I am developing a simple application Image Zooming using ASP and C#.
In that I used treeview control to display images in different levels or sizes.
Here I am storing the images in database in byte format.
If I click on particular image I am displaying that in Imagebutton.
How can I get image path that is stored in database in byte format.
I want that image path from database.
Please anybody help me.


Thanks in Advance

[balame2004]

Hi,

I am developing a simple application Image Zooming using ASP and C#.
In that I used treeview control to display images in different levels or sizes.
Here I am storing the images in database in byte format.
If I click on particular image I am displaying that in Imagebutton.
How can I get image path that is stored in database in byte format.
I want that image path from database.
Please anybody help me.


Thanks in Advance

Convert byte array into string so now you can get image url

[Frinavale]

Hi,

I am developing a simple application Image Zooming using ASP and C#.
In that I used treeview control to display images in different levels or sizes.
Here I am storing the images in database in byte format.
If I click on particular image I am displaying that in Imagebutton.
How can I get image path that is stored in database in byte format.
I want that image path from database.
Please anybody help me.


Thanks in Advance

You could create an ASPX page to serve up your images.
Basically create a new ASPX page and strip out the content...so your ASPX page would look something like:

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Picture.aspx.vb" Inherits="MyNamespace.Picture" %>
 

Then in your Page_Load you retrieve the image from the database and write that directly to the Response stream....

eg:

 
 
'Instead of reading the file from the server, read it from your database.
'You will have to pass a Parameter in with your query string that will let this aspx page know what your picture ID in order to retrieve the image from your database.
        Dim fs As FileStream = File.OpenRead(Server.MapPath("~/Images/theImageName.jpg"))
        Dim b(fs.Length) As Byte
        For i = 0 To fs.Length - 1
            b(i) = fs.ReadByte
        Next
        fs.Close()
'Note that I'm setting the content type to image/jpg...so now when this ASPX page is returned to the browser, it's mime type is set to image/jpg...which the browser will render as an image
       Response.ContentType = "image/jpg"
       Response.BinaryWrite(b)
 

Then for your link button you would set the image url to be aspx page serving up your image.

eg:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
     myImageButton.ImageUrl = "Picture.aspx"
 
'Since you'll have to pass some ID into your picture aspx page your ImageUrl will look more like:
'myImageButton.ImageUrl = "Picture.aspx?picId=12345"
End Sub
 

-Frinny