can we pass multiple eval field in one command argument.

my code is here

`<asp:TemplateField HeaderText="Details" SortExpression="source">
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CommandArgument='<%#Eval("source") %>' CommandName="Download" Text='<%#Eval("source") %>'></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>`

I want to be pass many Eval field in single command argument with command name
if possible please show any reference.