今天增加了如何保存文件的第三数据流到solidworks的文件中.
例如xml文件,文本信息.
private ModelDoc2 m_RefDoc; //增加第三方数据流 共用模型.
private void btn_ThridData_Click(object sender, EventArgs e)
{
//https://www.codestack.net/solidworks-api/data-storage/third-party/embed-file/
ISldWorks swApp = Utility.ConnectToSolidWorks();
ModelDoc2 swModel = default(ModelDoc2);
ModelDocExtension swModelDocExt = default(ModelDocExtension);
swModel = swApp.ActiveDoc;
m_RefDoc = swModel;
switch (swModel.GetType())
{
case (int)swDocumentTypes_e.swDocPART:
(swModel as PartDoc).SaveToStorageNotify += new DPartDocEvents_SaveToStorageNotifyEventHandler(OnSaveToStorage);
break;
case (int)swDocumentTypes_e.swDocASSEMBLY:
(swModel as AssemblyDoc).SaveToStorageNotify += new DAssemblyDocEvents_SaveToStorageNotifyEventHandler(OnSaveToStorage);
break;
}
swModel.SetSaveFlag();
swApp.SendMsgToUser("请手动保存文件!这样会把数据流写入文件中.");
}
private int OnSaveToStorage()
{
IStream iStr = (IStream)m_RefDoc.IGet3rdPartyStorage("Tool.Name", true);
using (ComStream comStr = new ComStream(iStr))
{
byte[] data = Encoding.Unicode.GetBytes("Paine's Tool");
comStr.Write(data, 0, data.Length);
}
m_RefDoc.IRelease3rdPartyStorage("Tool.Name");
return 0;
}
private void btn_LoadThrid_Click(object sender, EventArgs e)
{
ISldWorks swApp = Utility.ConnectToSolidWorks();
// ModelDoc2 swModel = default(ModelDoc2);
IModelDoc2 doc = swApp.IActiveDoc2;
ISelectionMgr selMgr = doc.ISelectionManager;
// IComponent2 comp = selMgr.GetSelectedObjectsComponent3(1, -1);
IStream iStr = (IStream)doc.IGet3rdPartyStorage("Tool.Name", false);
if (iStr != null)
{
using (ComStream comStr = new ComStream(iStr))
{
byte[] data = new byte[comStr.Length];
comStr.Read(data, 0, (int)comStr.Length);
string strData = Encoding.Unicode.GetString(data);
MessageBox.Show(strData);
}
doc.IRelease3rdPartyStorage("Tool.Name");
}
}
public class ComStream : Stream
{
//The managed stream being wrapped
private IStream originalStream_;
public ComStream(IStream stream)
{
if (stream != null)
{
originalStream_ = stream;
}
else
{
throw new ArgumentNullException("stream");
}
}
~ComStream()
{
Close();
}
// property to get original stream object
public IStream UnderlyingStream
{
get
{
return originalStream_;
}
}
// reads a specified number of bytes from the stream object
// into memory starting at the current seek pointer
public unsafe override int Read(byte[] buffer, int offset, int count)
{
if (originalStream_ == null)
{
throw new ObjectDisposedException("originalStream_");
}
if (offset != 0)
{
throw new NotSupportedException("only 0 offset is supported");
}
int bytesRead;
IntPtr address = new IntPtr(&bytesRead);
originalStream_.Read(buffer, count, address);
return bytesRead;
}
// writes a specified number of bytes into the stream object
// starting at the current seek pointer
public override void Write(byte[] buffer, int offset, int count)
{
if (originalStream_ == null)
{
throw new ObjectDisposedException("originalStream_");
}
if (offset != 0)
{
throw new NotSupportedException("only 0 offset is supported");
}
originalStream_.Write(buffer, count, IntPtr.Zero);
}
// changes the seek pointer to a new location relative to the beginning
// of the stream, the end of the stream, or the current seek position
public unsafe override long Seek(long offset, SeekOrigin origin)
{
if (originalStream_ == null)
{
throw new ObjectDisposedException("originalStream_");
}
long position = 0;
IntPtr address = new IntPtr(&position);
originalStream_.Seek(offset, (int)origin, address);
return position;
}
public override long Length
{
get
{
if (originalStream_ == null)
{
throw new ObjectDisposedException("originalStream_");
}
STATSTG statstg;
originalStream_.Stat(out statstg, 1 /* STATSFLAG_NONAME*/ );
return statstg.cbSize;
}
}
public override long Position
{
get
{
return Seek(0, SeekOrigin.Current);
}
set
{
Seek(value, SeekOrigin.Begin);
}
}
// changes the size of the stream object
public override void SetLength(long value)
{
if (originalStream_ == null)
{
throw new ObjectDisposedException("originalStream_");
}
originalStream_.SetSize(value);
}
// closes (disposes) the stream
public override void Close()
{
if (originalStream_ != null)
{
originalStream_.Commit(0);
// Marshal.ReleaseComObject( originalStream_ );
originalStream_ = null;
GC.SuppressFinalize(this);
}
}
public override void Flush()
{
originalStream_.Commit(0);
}
public override bool CanRead
{
get
{
return true;
}
}
public override bool CanWrite
{
get
{
return true;
}
}
public override bool CanSeek
{
get
{
return true;
}
}
}
