Hi

Kindly post this asp.net question in the relevant DG.

However, the solution for your question would be,

1. Create one property in the other usercontrol, which needs to be
populated. This property should accept a datatable. In the property get, try
to assign this as the datasource and do a data bind to the drop down.

2. Since you have the autopostback to true, once you come to the server,
pull the data you need to bind in a data table. Assign it to the property,
you created in the user control.

Hope this helps. Let me know, if you want more info.

Prem