New Post: System.OutOfMemoryException while DataFacade.AddNew(file, providerName)

[OutOfMemoryException: 引发类型为“System.OutOfMemoryException”的异常。]
System.IO.MemoryStream.set_Capacity(Int32 value) +93
System.IO.MemoryStream.EnsureCapacity(Int32 value) +50
System.IO.MemoryStream.Write(Byte[] buffer, Int32 offset, Int32 count) +265
System.IO.Stream.InternalCopyTo(Stream destination, Int32 bufferSize) +41
System.IO.Stream.CopyTo(Stream destination) +130
Composite.Plugins.Data.DataProviders.MediaFileProvider.MediaFileProvider.AddNew(IEnumerable1 datas) +1320
Composite.Data.Foundation.PluginFacades.<>c__DisplayClass101.<AddNew>b__e(IWritableDataProvider provider) +52

        using (FileStream source = new FileStream(localPath, FileMode.Open, FileAccess.Read))

        {
            file.Length = (int)source.Length;
            file.MimeType = MimeTypeInfo.GetCanonicalFromExtension(ext);

            using (Stream destination = file.GetNewWriteStream())
            {
                source.CopyTo(destination);
            }
        }

        return DataFacade.AddNew<IMediaFile>(file, providerName);