how to pass multiple value

<asp:LinkButton runat="server" ID="SelectButton" Text="More" CommandName="Select" OnClientClick='<%# Eval("CITY_CODE", "window.showModalDialog(\"child.aspx?id={0}\")") %>'  />                 




in this how to pass multiple values . i want to pass city code as well as name.in this i am passing only city code

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