>On my way to learning this thing called ASP.NET <g>:
>
>In v1.1 I have a form that has a few labels, dropdowns and textboxes to gather parameters from the user to produce a report. The queries and calculations are done (in a class) and returned as an HTML Table. It is a single page deal. There is an if() checking for PostBack. If PostBack=true then it sets all the page controls.visible property to false and then shows the HTML Table with the results.
>
>I did not see an automatic way for the controls to dissappear by themselves on PostBack so I just turn them invisible but the space where they are is still used as blank rows, therefore the table starts very low on the page.
>
>What is the proper way to hide the controls not wasting their screen real estate?

I don't know if it's "proper" or optimal, but I can tell you what I've done:

- I grouped, and positioned the controls I wanted to hide in a System.Web.UI.WebControls.Table
- since the controls I wanted to hide were now children of the table cells, simply making the .Table invisible seemed to do the trick.

I seem to recall experimenting with other table types but the System.Web.UI.WebControls.Table seemed to hide the most cleanly, with minimal or no wasted space.