c# - Check file existence before WebClient.DownloadFile -

i know how check if file exists before downloading.

current code:

string url = environment.getfolderpath(environment.specialfolder.desktop) + "/text.txt"; string path = "asdf.wix.com/text.txt";  using (var client = new webclient()) {     client.downloadfile(url, path); } 

the code works if file missing on site creates empty text.txt causes issues.

any ideas? thank you!

if url var points location on pc, check existence system.io.file.exists:

if(!system.io.file.exists(url) {     //code handles file dne case.. maybe log , return? } 

if it's pointing towards remote location, i'm not sure how check existence beforehand.

you could, however, handle 404 case returned webclient , delete erroneous text.txt file

using (var client = new webclient()) {     try     {         client.downloadfile(url, path);     }     catch (webexception e)     {         var statuscode = ((httpwebresponse) e.response).statuscode;          if (statuscode == httpstatuscode.notfound && system.io.file.exists(path))         {             system.io.file.delete(path);             //maybe log occurence         }     } }