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Old January 29th, 2004, 08:19 AM
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Default Dynamically adding Image to web page

I am having a page where i have to show image based on the Id in which he logged in

Just like a profile if user logged in i have to show his picture and his details
Can any body giv me some sample code regarding this and the best sample page regarding this.

Regards
Vijaykoneru

 
Old January 29th, 2004, 09:46 AM
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I did something similar a long time ago. I have a sign in page that displayed a picture next to your name. I don't have the code anymore. But I still know how it works.

You can save the name of the pictures into a column on the table and have the code like this:

<img src=images/" & row("image_name") & " />

 
Old January 30th, 2004, 09:25 AM
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I found this on one project that I set up when i was first learning asp.net. It's messy but you should get the idea. Once you have a dataset you could use this code:

sResults.Append("<table width=100% border=0 cellpadding=0 cellspacing=0>")
        sResults.AppendFormat("<tr><td><h3>{0}</h3></td></tr></table><br>", getHAdata())

        sResults.Append("<table width=100% border=0 cellpadding=2 cellspacing=0>")
        sResults.Append("<tr id=producttable>" & _
            "<td>Model</td><td></td><td align=center width=90>In Stock</td>" & _
            "<td align=center width=90>Price</td><td align=center width=90>Buy</td></tr>")
Dim r As DataRow
        For Each r In objDataSet.Tables("mydatatable").Rows
            sResults.Append("<tr id=products><td width=20>" & _
            "<a class=productlinks href=item.aspx?p=1&i=" & r("prod_id") & ">" & _
            "<img src=images/" & r("prod_id") & ".gif height=35 width=40 border=0 /></a></td>" & _
            "<td><a class=productlinks href=item.aspx?p=1&i=" & r("prod_id") & ">" & getHAdata() & "</a></td>" & _
            "<td id=prodtext>" & r("in_stock") & "</td>" & _
            "<td id=prodtext>" & r("price") & "</td>" & _
            "<td id=prodtext>Buy</td></tr>")
        Next

        sResults.Append("</table><br><br><br>")

        Return sResults.ToString



 
Old January 30th, 2004, 11:24 AM
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You can use an aspx page in the image tag like..
<img src="http://mysite/picturegetter.aspx?image=Johnny.jpg">

In your the picturegetter.aspx you must check the image name desired and then stream the image through the response object. Do this through the pageload event in your code behind page. You have NOTHING in the ASPX page.

So, in the pageload event, get your image name using the query string. Then you load the image into a bitmap and stream it out the reponse object. Example below (haven't tested this, but it should give you pretty much what you need)...

Imports System.IO
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim FileName as String
Dim pic As System.Drawing.Image
Dim myBitMap as System.Drawing.Bitmap

'get image name
FileName=Request.Querystring("image")

'load file
pic=pic.FromFile(pFileName)

'convert image to bitmap so you have SAVE method
myBitMap=pic

'Now write to response stream
Response.ContentType = "image/jpg"
myBitMap.Save(Response.OutputStream, ImageFormat.Jpeg)

End Sub

I can't remember what all of the imports you really need. In my code I am calling a webservice to deliver the image so its slightly different.

Hope this helps.
Hubman
 
Old March 14th, 2004, 08:42 PM
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Here is another, for performace issue to creating Bitmap everytime..
I'm using both method for conditionally.
here:
================================
(A creating Image object)
ImageOutput = Image.FromFile(ImagePath)
ResponseOutput.ContentType = "image/jpeg"
ImageOutput.Save(ResponseOutput.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg)

(B, if getting image from file) --> preferred method as saving A Image Object ^^
ResponseOutput.ContentType = "image/gif"
ResponseOutput.WriteFile(yourImageFileFullPath)
================================

http://www.busyphoto.com
http://mobile.busyphoto.com





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