Question

我有9个xml文件，这是我们的项目数据库，我们用这个方法写入数据库我只给了一点代码。

  public int WriteDatabase(string path)
      {
lock(m_spoData)
            {
          m_spoData.DataVersion.Rows.Clear();
          SpoConfigData ds = new SpoConfigData();

               ds.ExternalApplication.Merge( m_spoData.ExternalApplication );
               ds.WriteXml( path + ExtAppFile );
               ds.Clear();

               ds.SpoServer.Merge(m_spoData.SpoServer);
               ds.ManagedObject.Merge( m_spoData.ManagedObject );
               ds.AttributeValue.Merge( m_spoData.AttributeValue );
               ds.Threshold.Merge( m_spoData.Threshold );
               ds.WriteXml( path + ObjectFile );
               ds.Clear();

               ds.ObjectClass.Merge( m_spoData.ObjectClass );
               ds.ObjectAttribute.Merge( m_spoData.ObjectAttribute );
               ds.WriteXml( path + ClassFile );
               ds.Clear();

               ds.Image.Merge( m_spoData.Image );
               ds.AlertImageList.Merge( m_spoData.AlertImageList );
               ds.WriteXml( path + ImageFile );
               ds.Clear();

               ds.ManagedGroup.Merge( m_spoData.ManagedGroup );
               ds.WriteXml( path + GroupFile );
               ds.Clear();

               ds.UserZone.Merge( m_spoData.UserZone );
               ds.ViewFolder.Merge( m_spoData.ViewFolder );
               ds.ViewGroup.Merge( m_spoData.ViewGroup );
               ds.ZoneMgGrpCollection.Merge( m_spoData.ZoneMgGrpCollection );
               ds.WriteXml( path + ZoneFile );
               ds.Clear();

               ds.ResourcePolicy.Merge( m_spoData.ResourcePolicy );
               ds.ResourceType.Merge( m_spoData.ResourceType );
               ds.ResourceObject.Merge( m_spoData.ResourceObject );
               ds.ResourceAttrValue.Merge( m_spoData.ResourceAttrValue );
               ds.WriteXml( path + ResourcePolicyFile );
               ds.Clear();

               ds.Principal.Merge(m_spoData.Principal);
               ds.Role.Merge( m_spoData.Role );
               ds.WriteXml( path + RoleFile );
               ds.Clear();

               ds.Permission.Merge( m_spoData.Permission );
               ds.WriteXml( path + PermissionFile );
               ds.Clear();} }

她的下方有两行代码就像这样

// reset data version base on file last write time.
               m_spoData.DataVersion.AddDataVersionRow( ( new FileInfo( path + ZoneFile ) ).LastWriteTime.Ticks );

如果我将ZoneFile更改为PermissionFile会对此产生什么影响

Answer 1

看起来代码正在使用LastWriteTime.Ticks - 这是一个表示文件上次写入时间的数值 - 作为某种版本控制机制。由于你在同一时间写两个文件（PermissionFile和ZoneFile），我不希望有任何重大差异。

LastWriteTime.Ticks的重要性是什么

1 个答案: