/// <summary>
/// 全构造函数
/// </summary>
public SystemAttachmentContentEntity(int id, SystemAttachmentEntity attacmentID, byte[] fileContent)
{
_id = id;
_attacmentID = attacmentID;
_fileContent = fileContent;
}
/// <summary>
/// 默认构造函数
/// </summary>
public SystemAttachmentContentEntity()
{
_id = 0;
_attacmentID = null;
_fileContent = new byte[1];
}