How to pass Hiddenfield value in request.query string?

Question

<a href="LinkScopeDetails.aspx?mode=add &LinkCode=<%# Eval("LINK_ID") %> &ObjCode=<%# Eval("OBJ_CODE") %> &Desc=<%# Eval("OBJ_DESC") %> &Uni=<%# Eval("OBJ_UNI_CODE") %>" title="Object Scope Create">Object Scope</a>

 

i pass the repeater value in query string.now i want ot pass hidden field value in query string.i get the hidden field value in .cs page and how to pass it in aspx page. 

 

hfobjcode.Value = dtUomDetails.Rows[0]["OBJ_CODE"].ToString();