display thematic map using openlayers

iam displaying map from mapfile(mapserver) in c# using openlayers
mapfile is connected to postgres
it is working well
but now i want to diaplay thematic map using
the postgrs database using openlayers in c#
plz tell me the code
this is my mapfile

MAP
EXTENT 8240841.450745 2400319.900386 9218007.463612 3107183.406947

TRANSPARENT on
IMAGETYPE png
size 150 500

web
    metadata
        wms_srs "EPSG:4326 EPSG:900913"
    end
end

LAYER
CONNECTIONTYPE postgis
CONNECTION “user=postgres password=****** dbname=mpdb port=5432 host=localhost”
DATA “geom FROM district using unique gid”

STATUS Default
TYPE polygon


PROJECTION
      "init=epsg:900913"
END



labelitem 'district'

class                    
    style                

        #color 55 230 51
        outlinecolor 90 90 90
        width 2
    end 
    LABEL
        #color 255 255 255
        size 2
        BACKGROUNDCOLOR 255 201 14
        position auto
    END          
end  

END
END