private static void UpdloadFile(Stream stream, string filePath)
{
if (File.Exists(filePath))
{
File.Delete(filePath);
}
using (var uploadedFileStream = File.Open(filePath, FileMode.Create))
{
var buffer = new byte[256];
int count;
while ((count = stream.Read(buffer, 0, 256)) > 0)
uploadedFileStream.Write(buffer, 0, count);
uploadedFileStream.Flush();
}
}