private string saveFile(string subFolder, int folderId, string fileExtension, byte[] fileData)
{
// make sure the subfolder has been created
_persistenceHelper.CreateDirectoryIfNotExists(string.Format("{0}{1}\\", root, subFolder));
var folderPath = String.Format("{0}{1}\\{2}\\", root, subFolder, folderId);
_persistenceHelper.CreateDirectoryIfNotExists(folderPath);
//Create a unique file name
var index = DateTime.Now.Millisecond;
var fileName = String.Format("{0}-{1}" + fileExtension, folderId, index);
var fullPath = String.Format("{0}{1}", folderPath, fileName);
while (File.Exists(fullPath))
{
index++;
fileName = String.Format("{0}-{1}" + fileExtension, folderId, index);
fullPath = String.Format("{0}{1}", folderPath, fileName);
}
//Write the image to the folder
_persistenceHelper.WriteFileData(fullPath, fileData);
return(fileName);
}