Code behind variable in html control attribute problem

**gtilles** · Aug 24th, 2006, 04:08 PM

I have a boolean in my code behind that I want to control the visibility of a control but I get a databinding error. Not sure if my syntax is correct.
I've simplified what I am doing below. I have no problem accessing public and protected variables in html via <%=whatever%> but when I try to apply to a control attribute it isn't working.

VB Code:

Protected myBoolean as boolean=false
 
<html>
<Component:myComponent Visible="<%# myBoolean%>"/>
</html>

**invitro** · Aug 24th, 2006, 04:28 PM

I'll take a shot at this. I think the reason might be that the control wants a string, not a boolean value.

Try doing this:

Code:

Protected myBoolean as String = "false"

<html>
<Component:myComponent Visible="<%= myBoolean%>"/>
</html>

Let me know!

**gtilles** · Aug 24th, 2006, 04:30 PM

Tried that one to
Error is:
<%=myBoolean%> is not a valid value for Boolean

**mendhak** · Aug 25th, 2006, 08:22 AM

Me.MyControl.Visible = myBoolean

**gtilles** · Aug 25th, 2006, 04:12 PM

Where are talking the HTML side of things

**dogboydelta** · Aug 28th, 2006, 11:42 AM

I would do it in the codebehind, but you could try this:

<html>
<Component:myComponent Visible="<%= myBoolean.toString %>"/>
</html>

No idea if this works, never do it this way.

**mendhak** · Aug 29th, 2006, 10:43 AM

Originally Posted by gtilles

Where are talking the HTML side of things

What I've shown is the same thing, only it's the proper way to facilitate separation of UI and UI logic.

**gtilles** · Aug 30th, 2006, 10:59 AM

Thanks but....my question was doing it on the HTMl side not how to do it on the code behind. I am already aware of how to do it on the code-behind.....but in this case, proper coding or not...I want it on the HTML.
This is the question. not looking for alternate answers.

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