/**
* Ensure that a memory based package part does not have lingering data from previous
* commit() calls.
*
* Note: This is overwritten for some objects, as *PictureData seem to store the actual content
* in the part directly without keeping a copy like all others therefore we need to handle them differently.
*/
protected internal virtual void PrepareForCommit()
{
PackagePart part = this.GetPackagePart();
if (part != null)
{
part.Clear();
}
}
/**
* Commit Changes to the underlying OPC namespace
*/
public virtual void Commit()
{
if (extPart == null && !NEW_EXT_INSTANCE.ToString().Equals(ext.props.ToString()))
{
try
{
PackagePartName prtname = PackagingUriHelper.CreatePartName("/docProps/app.xml");
pkg.AddRelationship(prtname, TargetMode.Internal, "http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties");
extPart = pkg.CreatePart(prtname, "application/vnd.openxmlformats-officedocument.extended-properties+xml");
}
catch (InvalidFormatException e)
{
throw new POIXMLException(e);
}
}
if (custPart == null && !NEW_CUST_INSTANCE.ToString().Equals(cust.props.ToString()))
{
try
{
PackagePartName prtname = PackagingUriHelper.CreatePartName("/docProps/custom.xml");
pkg.AddRelationship(prtname, TargetMode.Internal, "http://schemas.openxmlformats.org/officeDocument/2006/relationships/custom-properties");
custPart = pkg.CreatePart(prtname, "application/vnd.openxmlformats-officedocument.custom-properties+xml");
}
catch (InvalidFormatException e)
{
throw new POIXMLException(e);
}
}
if (extPart != null)
{
Stream out1 = extPart.GetOutputStream();
if (extPart.Size > 0)
{
extPart.Clear();
}
ext.props.Save(out1);
out1.Dispose();
}
if (custPart != null)
{
Stream out1 = custPart.GetOutputStream();
cust.props.Save(out1);
out1.Dispose();
}
}
