Need to dynamically load user controls

[joeller]

I need to dynamically load controls and access the methods and property of the control from the page. I need to load a different control depending on a selection made by the user. I have buttons on the page whose click events call methods on the controls that process the data selected by the user. I thought I could register one control on the page then call usercontrol.LoadControl(path) to redirect the registered control to a different ascx file. However, instead, the initially registered control persists in loading. I then tried to instantiate the control in code and load that, but then the page will not compile because the methods being called by the buttons on the page do not yet exist. Does anyone have any ideas?