public void LoadXRefList(ref string msg)
{
try
{
XmlDocument docXRef = new XmlDocument();
XmlDocument docXShm = new XmlDocument();
if (File.Exists(XRefListPath))
{
docXRef.Load(XRefListPath);
}
if (File.Exists(XShmListPath))
{
docXShm.Load(XShmListPath);
}
// initialize blocklist
BlockListMgr.Init(docXRef.SelectNodes("xref//Blocks//Block"));
IOAddressMgr.Init(docXRef.SelectNodes("xref//IOConnections//Connection"));
CompoundBlockMgr.Init(docXRef.SelectNodes("xref//CompoundBlocks//CompoundBlock"));
BuildListMgr.Init(docXRef.SelectNodes("xref//BuildManager//Plan"));
// force to save if file not exist
if (!File.Exists(XRefListPath))
{
BlockListMgr.Dirty = true;
}
// initialize shared memory list
XmlNodeList ShmVariableList = docXShm.SelectNodes("xref//SharedMemory//Variable");
SharedMemoryMgr.Init(ShmVariableList, ref msg);
if (!string.IsNullOrEmpty(msg))
{
// loaded from PIV file, force to save to new file
SharedMemoryMgr.Dirty = true;
}
else
{
// check is old version xref.data or not. In new version, xref.data is seperated
// into xref.data & xshm.data two files.
if (ShmVariableList == null || ShmVariableList.Count <= 0)
{
XmlNodeList RefVariableList = docXRef.SelectNodes("xref//SharedMemory//Variable");
if (RefVariableList != null && RefVariableList.Count > 0)
{
SharedMemoryMgr.Init(RefVariableList, ref msg);
msg = "A shared memory variable database from xref.data was imported into xshm.data.";
// loaded from PIV file, force to save to new file
BlockListMgr.Dirty = true;
SharedMemoryMgr.Dirty = true;
}
}
}
// force to save if file not exist
if (!File.Exists(XShmListPath))
{
SharedMemoryMgr.Dirty = true;
}
}
catch (Exception)
{
}
}