/// <summary>
/// 把body导出为文件流
/// </summary>
/// <param name="body"></param>
/// <param name="filePath"></param>
public static void SaveBodyToFile(IBody2 body, string filePath)
{
IStream stream = null;
CreateStreamOnHGlobal(IntPtr.Zero, true, ref stream);
body.Save(stream);
var comStream = new ComStreamBody(ref stream, false, false);
using (var fileStream = File.Create(filePath))
{
comStream.Seek(0, SeekOrigin.Begin);
comStream.CopyTo(fileStream);
}
}