Asp.net C# android 7.0 fileupload

public void UpLoad(string imgName, string LocalFile)
        {
            WebClient client = new WebClient();
            NetworkCredential nc = new NetworkCredential(myuserName, myPassword);
            Uri addy = new Uri(myFTPServer+ imgName);
            client.Credentials = nc;
            client.UploadFile(addy, LocalFile);
        }


 protected void btnUpLoad_Click(object sender, EventArgs e)
    {
        clsFTP.clsImgProperty cFTP = new clsFTP.clsImgProperty();
       // string strPath = Path.GetFullPath(FLoadDoc.PostedFile.FileName);//FLoadDoc.PostedFile.FileName
        //string upDir = Path.Combine(Request.PhysicalApplicationPath, @"/DCIM/Camera/");
        //string strPath = @"~/DCIM/Camera/" + Path.GetFileName(FLoadDoc.FileName);
        string strPath = @"\storage\sdcard0\DCIM\Camera\" + FLoadDoc.FileName;
        // / storage / sdcard0 / DCIM
        //‏‏מחשב זה\Galaxy A5 (2017)\Phone\DCIM\Camera
        cFTP.UpLoad(Path.GetFileName(FLoadDoc.FileName), strPath);//where to , from where
    }