c# - Download Files Async -


my code this:

webclient sz_getconf = new webclient();         #region get_filesinreleasemanifest         if (file.exists("release_manifest"))         {             string[] files = file.readalllines("release_manifest");             foreach (string filename in files)                 if (file.exists("wowfolder/" + filename))                 {                     file.delete(filename);                     string itemtodownload = urlpath;                     itemtodownload += filename;                     sz_getconf.downloadprogresschanged += new downloadprogresschangedeventhandler(sz_getconf_downloadprogresschanged);                     sz_getconf.downloadfilecompleted += new system.componentmodel.asynccompletedeventhandler(sz_getconf_downloadfilecompleted);                     sz_getconf.downloadfileasync(new uri("http://someurl.com/dl/"+filename), filename);                 }         #endregion

when try compile receive error:

"no source available no symbols loaded call stack frame. source code not displayed."

what should do?

error image: click me!


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