Server tags cannot contain <% ... %> constructs

  • Thread starter Thread starter Marcos MOS
  • Start date Start date
M

Marcos MOS

Hi,

I've put a appSetting tag into my web.config, but when I try to catch its
value to my Image WebControl occurs the follow error: "Server tags cannot
contain <% ... %> constructs."

on myPage.aspx (Notice the ImageUrl tag):
<asp:Image id="Image1" runat="server"
ImageUrl=<%=System.Configuration.ConfigurationSettings.AppSettings["SrcImgSi
stema"]%> />

So, What's wrong with my ImageUrl attribution?
Is there any way to do that?

thanks a lot
Marcos
 
Thanks... but, I'd like to do it inside my .aspx file...

Isn't it possible?

tanks
Marcos

Sharon said:
you can set this property programmatically within a server script block:
Image1.ImageUrl =
System.Configuration.ConfigurationSettings.AppSettings.....
you cannot use <%%> inside a web control as web controls already run at the
server.
sharon.

Marcos MOS said:
Hi,

I've put a appSetting tag into my web.config, but when I try to catch its
value to my Image WebControl occurs the follow error: "Server tags cannot
contain <% ... %> constructs."

on myPage.aspx (Notice the ImageUrl tag):
<asp:Image id="Image1" runat="server"
Click to expand...
ImageUrl=<%=System.Configuration.ConfigurationSettings.AppSettings["SrcImgSi
stema"]%> />

So, What's wrong with my ImageUrl attribution?
Is there any way to do that?

thanks a lot
Marcos
Click to expand...
Click to expand...
 
you can set this property programmatically within a server script block:
Image1.ImageUrl =
System.Configuration.ConfigurationSettings.AppSettings.....
you cannot use <%%> inside a web control as web controls already run at the
server.
sharon.
 
i don't know of any way, and there is no reason to do it inside the html
section.
one of the ideas behind web controls design, is the separation of code from
html.

Marcos MOS said:
Thanks... but, I'd like to do it inside my .aspx file...

Isn't it possible?

tanks
Marcos

Sharon said:
you can set this property programmatically within a server script block:
Image1.ImageUrl =
System.Configuration.ConfigurationSettings.AppSettings.....
you cannot use <%%> inside a web control as web controls already run at the
server.
sharon.
Click to expand...
ImageUrl=<%=System.Configuration.ConfigurationSettings.AppSettings["SrcImgSi
stema"]%> />

So, What's wrong with my ImageUrl attribution?
Is there any way to do that?

thanks a lot
Marcos
Click to expand...
Click to expand...
Click to expand...
 
In your code there are some errors :

The <%= construct can only be used in client script for write some value
from server (like old ASP).
your Image is server side not in client side!!!!

You can use the <%# construct. This is for binding value!
<asp:Image id="Image1" runat="server"
ImageUrl='<%#System.Configuration.ConfigurationSettings.AppSettings["SrcImgS
istema"]%>' />

this code require a DataBind() method call!!!

Brun
 
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