ASP.NET Eval Byte Array as String

[question]

I am building a ListView from an EntityDataSource. There is a Byte[] field called Sha1Hash that I need to convert to a String type for a Hyperlink. This is a code snippet from ItemTemplate:\[code\]<asp:HyperLink ID="hl_Document" runat="server" NavigateUrl='<%# string.Format("~/GetDocument.ashx?docId={0}", Eval("SHA1HASH") ) %>' Text='<%# Eval("DOCUMENTNAME") %>' />\[/code\]This is producing a URL like "~/GetDocument.ashx?docId=System.Byte[]", but it needs to be a hex string representing the value of the byte array. What would be the best approach to accomplish this? Ideally I would accomplish this entirely in the .aspx page rather than the code behind.