Bind image (dynamic img src)

[hamking01]

I'm trying to bind an image to a form. Where the name of the image is built dynamically. For example, if the querystring is 1, DB will pull record for 1 to find imagename field.

trying to bind to <img src="<%=imagename%>.jpg/>

how would i go about doing this. The image is not placed in a repeater or datagrid, neither does it have a "id" such as that of textboxes and labels. So I can't have the sub reference the img src.

 

[dragonwell]

Use an Image control.

<asp:Image runat="server" id="dynamicImage" />

In your code, you can refer to it and set it's properties as you like:

Me.dynamicImage.ImageUrl = "../images/xyz.gif"
Me.dynamicImage.Visible = True
me.dynamicImage.Width = 
'etc....

Greetings,
Dragonwell

 

[hamking01]

What i'm trying to do is to have the page load the appropriate image based on the querystring. For example, if the the querystring has id=1 it'll load the image 1.jpg,
if id=2 will load 2.jpg.

 

[dragonwell]

Sure. In your PageLoad method, just get the value from the QueryString and use it to set the url of your Image

[VB]

Dim imageID as String
If Not Request.QueryString("id") is Nothing Then
   
    imageID = Request.QueryString("id")
    
    Me.dynamicImage.ImageUrl = "images/" + imageID + ".jpg"

End If

Greetings,
Dragonwell

 

[hamking01]

what if i need to load images that aren't saved as the querystring id names. For example if id=1 it'll connect to DB and find the imagename (ie. imagename1) field for that record and output accordingly.

With textboxes, labels, datagrids, repeater i can connect to database and bind with SOMETHING.databind or SOMETHING.text, in which SOMETHING is the id name of either of the four. I can't figure how to do the same to load a image.

 

[hamking01]

Figured it out as follows:

Sub PicBind()
Dim sqldisplay as String
sqldisplay = "SELECT * FROM QL WHERE " & GetDetail
Dim conn as OleDbConnection
conn = new OleDbConnection ("Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=C:\local\acs\Q.mdb")
conn.Open()
Dim cmd as OleDbCommand
cmd = new OleDbCommand (sqldisplay, conn)
Dim reader as OleDbDataReader
reader = cmd.ExecuteReader()
if (reader.Read()) Then
dyImage.ImageUrl = "pic/" & reader("CFItemNO").ToString() & "L.jpg"
End if
conn.Close()
End Sub