请问AE怎么实现保存SceneControl的工作区

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<TD  vAlign=top width=* height="100%"><IMG src="http://www.gisempire.com/bbs/Skins/Default/topicface/face1.gif" align=absMiddle border=0> <B>请问AE怎么实现保存SceneControl的工作区</B><BR>
<P>就是我在SceneControl控件里放大等操作，我可以随时保存当前的工作区，然后重新打开文件，地图显示和我关闭前状态是一样的？</P></TD></TR></TABLE>

<P><FONT color=#0000ff>private</FONT> IMapDocument m_MapDocument;<BR></P>
<P>    <CODE><FONT color=#0000ff>private void</FONT></CODE> OpenDocument(<CODE><FONT color=#0000ff>string</FONT></CODE> sFilePath)<BR>    {<BR>      <CODE><FONT color=#008000>//Create a new map document</FONT></CODE><BR>      m_MapDocument = <CODE><FONT color=#0000ff>new</FONT></CODE> MapDocumentClass();<BR>      <CODE><FONT color=#008000>//Open the map document selected</FONT></CODE><BR>      m_MapDocument.Open(sFilePath,"");<BR>      <CODE><FONT color=#008000>//Set the PageLayoutControl page layout to the map document page layout</FONT></CODE><BR>      axPageLayoutControl1.PageLayout = m_MapDocument.PageLayout;<BR>      txtMapDocument.Text = m_MapDocument.DocumentFilename;<BR>    }<BR><BR>    <CODE><FONT color=#0000ff>private void</FONT></CODE> SaveDocument()<BR>    {<BR>      <CODE><FONT color=#008000>//Check that the document is not read only</FONT></CODE><BR>      <CODE><FONT color=#0000ff>if</FONT></CODE> (m_MapDocument.get_IsReadOnly(m_MapDocument.DocumentFilename) == <CODE><FONT color=#0000ff>true</FONT></CODE>)<BR>      {<BR>        MessageBox.Show("This map document is read only!");<BR>        return;<BR>      }<BR>      <CODE><FONT color=#008000>//Save with the current relative path setting</FONT></CODE><BR>      m_MapDocument.Save(m_MapDocument.UsesRelativePaths,<CODE><FONT color=#0000ff>true</FONT></CODE>);<BR>      MessageBox.Show("Changes saved successfully!");<BR>    }<BR><BR>Files for this sample: <your install location>/samples/Controls/SaveMapDocumentCSharp.zip </P>

<P>谢谢：axPageLayoutControl1.PageLayout = m_MapDocument.PageLayout;</P>
<P>但是这是针对PageLayoutControl对象的吧，我需要保存SceneControl对象的工作区，请问怎么实现？<BR></P>

<P>我也想知道</P>