In .NET, why doesn't pointing to a data source implicitly bind the data?

Question

Consider the following code:

var setData = database.sets.Where(x => x.Value > 2);
uxSetDataGrid.DataSource = setList.ToList();
uxSetDataGrid.DataBind();

I'm curious why the second line of code doesn't automatically do a DataBind() on the control. If it knows the data source, why not bind in the same step? It could save some lines of code and keystrokes. Perhaps I'm missing context since I'm a pretty new .NET developer, but are there any situations where you wouldn't want to do DataBind() immediately after pointing to a DataSource?