how to download to a sub directory with c# updater? -

hello have c# downloader/updater. trying make files downloads go 2 seperate directories based on name of file. have data folder , within data folder have folder. want put data.dat files in data folder. , us.dat files in folder, when downloaded.

here code using updater

i believe should put in 1 of these 2 files. looks this.

frmupdater.cs http://pastebin.com/a1n7hnyn
updater.cs http://pastebin.com/w2g3hptj

please me figure out want make application, recognise difference in file names , put them in there respective folders