Why is not the second control visible in design mode

Tony Johansson · Aug 20, 2011

Hello!

Here is a simple aspx markup page and we have here two controls
The first one is a select html server control (class HtmlSelect) and the
second is a submit html server control(class HtmlInputSubmit).
The strange thing here is that the second control which is the sumbit
control is not shown in design mode but
is shown is runtime.
Can someboy explain that ?

If I for example change place on these then both is shown in design mode.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"
Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<select id="currency" runat="server" />
<input type="submit" value="OK" id="convert" runat="server" />
</div>
</form>
</body>
</html>

//Tony

Nitin Jain. · Aug 22, 2011

select should have closing tag.
Replace
<select id="currency" runat="server" />
to
<select id="currency" runat="server" ></select>

and check again.

Guest · Aug 22, 2011

thanks!

"Nitin Jain." skrev i meddelandet

select should have closing tag.
Replace
<select id="currency" runat="server" />
to
<select id="currency" runat="server" ></select>

and check again.

Guest · Aug 22, 2011

I just wonder normally you can close a tag by using a slash as in this
example
<select id="currency" runat="server" / >

But here you must close the tag by using the end tag
<select id="currency" runat="server" ></select>

Why
I mean when I use for example a label I close the tag by using the slash

//Tony

"Nitin Jain." skrev i meddelandet

select should have closing tag.
Replace
<select id="currency" runat="server" />
to
<select id="currency" runat="server" ></select>

and check again.

Arne Vajhøj · Aug 23, 2011

I just wonder normally you can close a tag by using a slash as in this
example
<select id="currency" runat="server" / >

But here you must close the tag by using the end tag
<select id="currency" runat="server" ></select>

Why
I mean when I use for example a label I close the tag by using the slash

First: the space between / and > is not good.

Second: select must contain at least one option to be valid.

Third: /> is a XHTML feature not a HTML feature, so it should
only work with XHTML.

Arne

Guest · Aug 24, 2011

"Arne Vajhøj" skrev i meddelandet

I just wonder normally you can close a tag by using a slash as in this
example
<select id="currency" runat="server" / >

But here you must close the tag by using the end tag
<select id="currency" runat="server" ></select>

Why
I mean when I use for example a label I close the tag by using the slash

First: the space between / and > is not good.

Second: select must contain at least one option to be valid.

Third: /> is a XHTML feature not a HTML feature, so it should
only work with XHTML.

Arne

Hello!

I can skip this option and it will work even without one.
So in that sense this option is not mandatory

//Tony

Arne Vajhøj · Aug 25, 2011

"Arne Vajhøj" skrev i meddelandet

I can skip this option and it will work even without one.
So in that sense this option is not mandatory

The DTD still says:

<!ELEMENT SELECT - - (OPTGROUP|OPTION)+ -- option selector -->

That + should mean 1 or more not 0 or more.

Arne

Guest · Aug 25, 2011

"Arne Vajhøj" skrev i meddelandet

"Arne Vajhøj" skrev i meddelandet

I can skip this option and it will work even without one.
So in that sense this option is not mandatory

The DTD still says:

<!ELEMENT SELECT - - (OPTGROUP|OPTION)+ -- option selector -->

That + should mean 1 or more not 0 or more.

Arne

Hello

What I try to say is that why do I not get any kind of error if I skip this
Option.
The only kind of thing that happen is that in design mode will a button that
exist after the select will not be shown but
the button will be shown is runtime mode.
Because the select require a option why do we not get a compile error

//Tony

Registered User · Aug 25, 2011

"Arne Vajhøj" skrev i meddelandet

The DTD still says:

<!ELEMENT SELECT - - (OPTGROUP|OPTION)+ -- option selector -->

That + should mean 1 or more not 0 or more.

Arne

Hello

What I try to say is that why do I not get any kind of error if I skip this
Option.
The only kind of thing that happen is that in design mode will a button that
exist after the select will not be shown but
the button will be shown is runtime mode.
Because the select require a option why do we not get a compile error

The error is not found at compile-time because neither the DTD or the
XML document are compiled. Errors in these documents will be
discovered at run-time by the appropriate instantiated parser.

regards
A.G.

Arne Vajhøj · Aug 26, 2011

"Arne Vajhøj" skrev i meddelandet

What I try to say is that why do I not get any kind of error if I skip
this Option.
The only kind of thing that happen is that in design mode will a button
that exist after the select will not be shown but
the button will be shown is runtime mode.
Because the select require a option why do we not get a compile error

You hsould not write invalid HTML/XHTML just because something does
not check if the HTML/XHTML is valid.

Arne

Why is the border on top much wider	0	Nov 12, 2011
Why is the e.target not working here?	1	Dec 29, 2022
Why is this WordPress comments form not submitting?	1	Jan 12, 2020
Not sure why drop-down is not working.	2	Mar 24, 2024
Why doesn't the function get called?	1	Nov 20, 2023
Why is not this simple example working	4	Dec 7, 2009
Why <link/> is not working?	4	Jan 1, 2020
why is this statement preventing an event handler to be called on the server	1	Dec 7, 2009

Why is not the second control visible in design mode

Tony Johansson

Nitin Jain.

Guest

Guest

Arne Vajhøj

Guest

Arne Vajhøj

Guest

Registered User

Arne Vajhøj

Ask a Question

Similar Threads

Members online

Forum statistics

Latest Threads