ASP.NET: Pass value from User Control to page?

Question

I am creating a user control in ASP.NET (using VB) that uses the autocomplete ajax control on a textbox to get a value. Then I want the page to post back and run some code

Answer 1

In your user control expose a property for the value

Public Property SomeValue() As String
Get
    Return textbox1.Text
End Get
End Property

Then in your aspx page load, just reference the user control's value.

userControl1.SomeValue

Edit, I just tried changing my syntax to vb.net, I don't actually know vb, so that syntax may or may not be right.