ASP.NET can you add controls at run time?

  • Thread starter Thread starter Jax
  • Start date Start date
J

Jax

Lets say i have a list of objects of a variable size.
What I would like to do is create controls and add them to
the web page at run time that represent all the items in
the list.
Problem is everytime i do this:

this.Controls.Add(SomeControl);

The html ends up after the </HTML> tag. Therefore it
doesn't work properly. What do i have to do to make sure
the extra html ends up within the tags?

Many thanks for anyone who clears my cloud of ignorence.

jax
 
Jax said:
Lets say i have a list of objects of a variable size.
What I would like to do is create controls and add them to
the web page at run time that represent all the items in
the list.
Problem is everytime i do this:

this.Controls.Add(SomeControl);

The html ends up after the </HTML> tag. Therefore it
doesn't work properly. What do i have to do to make sure
the extra html ends up within the tags?
Click to expand...

Read the documentation.

Use page trace output to see how things are built.

Your problem:

* The complete HTML content of a page is a control within your page*s
controls collection.

So, by adding your control THERE, you add it - beyond the page content.

What you need to od is - add it to a part within the controls hierarchy.

Use a trace (trace.axd, enable it first) to see how the control hierarchy
for your page looks in detail. It is way more complex (as in: thre are way
more controls) than you psosibly think at the moment.

Thomas Tomiczek
THONA Software & Consulting Ltd.
(Microsoft MVP C#/.NET)
 
Thankyou for that, it certainly will point me in the right
direction. I just got a new book which i'm sure will also
provide more clarity for my simple mind.
Many thanks.

jax
 
Jax said:
Lets say i have a list of objects of a variable size.
What I would like to do is create controls and add them to
the web page at run time that represent all the items in
the list.
Problem is everytime i do this:

this.Controls.Add(SomeControl);

The html ends up after the </HTML> tag. Therefore it
doesn't work properly. What do i have to do to make sure
the extra html ends up within the tags?

Many thanks for anyone who clears my cloud of ignorence.
Click to expand...

Add a PlaceHolder control at the position where you want your list to
appear, then add the dynamically created controls to the PlaceHolder's
control collection.

Cheers,
 
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