What other objects are accessible inside <%# %> tags in aspx?

<asp:CheckBox Runat="server" ID="myid" Checked='<%# DataBinder.Eval(Container.DataItem, "column").Equals(1) %>'>

<%#DirectCast(Container.DataItem, DataRow)("some_column")%>

<%#((DataRow)Container.DataItem)["some_column"].ToString()%>

<%#((System.Data.DataRow)Container.DataItem)["ColumnName"].ToString()%>