What's the difference between DataBinder.Eval and Bind?

I'm binding object properties to a GridView via the aspx page instead of the code-behind. I'm having trouble understanding the difference between DataBinder.Eval and Bind because they seem to do the same thing. Below is what I have in a web app. What caught my attention is that this wouldn't compile (parse error). Notice the dot notation of the object property Depth:

                            <asp:Literal ID="productDimensionsDepth" runat="server"
                                Text='<%# Bind("Dimensions.Depth") %>' />

But when I changed it like this, it worked fine:

                            <asp:Literal ID="productDimensionsWidth" runat="server"
                                Text='<%# DataBinder.Eval(Container.DataItem, "Dimensions.Width") %>' />

How come there is a difference? Are these identical?

                            <asp:Literal ID="productName" runat="server"
                                Text='<%# Bind("Name") %>' />

                            <asp:Literal ID="productName" runat="server"
                                Text='<%# DataBinder.Eval(Container.DataItem, "Name") %>' />