dotnet/wpf · error · XpsPackagingException

Not all opened dependents were committed.

Error message

Not all opened dependents were committed.

What it means

XpsInterleavingPolicy.ConfirmCommited (called during Flush) throws XpsPackagingException(SR.ReachPackaging_DependantsNotCommitted) when an interleaved dependent part that does not allow partial flush has not been committed. The interleaving policy requires all opened dependents to be committed before the package can be flushed.

Solutions

1. Call Commit() on every open IXpsFixedPageWriter/FixedDocumentWriter before flushing/closing the XpsDocument.
2. Ensure the document structure is completed in order (document → page → resources) so dependents get committed.
3. On error paths, dispose/close writers deterministically (using blocks) so partially built pages are committed or discarded properly.

Example fix

// before
pageWriter.AddImage("image/png");
documentWriter.Commit(); // dependents not committed
// after
pageWriter.AddImage("image/png");
pageWriter.Commit();
documentWriter.Commit();

bool allCommitted = openPages.All(p => p.IsCommitted);
if (!allCommitted) throw new InvalidOperationException("Commit all page writers before flush");

try { xpsDocument.Flush(); }
catch (XpsPackagingException ex) when (ex.Message.Contains("not committed")) { /* commit outstanding writers and retry */ }

When it happens

Trigger: Calling XpsDocument flush/close while a FixedPage/FixedDocument writer opened via the interleaving policy still has uncommitted parts (n.Commited == false and IsPartialFlushAllowed(n) is false).

Common situations: Forgetting to call Commit on a page writer before flushing the document; exception paths that abandon a writer mid-way; streaming XPS where interleaved parts must be committed in order.

Understand the failure class

Background: "Invalid state transition" errors: "status must be X, actually Y", "already rejected/charging/uninstalled", "cannot ... while running" — what they mean when a library rejects your call — this error's family across 31 libraries.

Related errors

• " }} " element found. Expected fixed page element ( }} ).
• ' ' ContentType is not valid.
• ' ' ContentType is not valid.
• Buffer address passed to GetText cannot be NULL.
• Cannot convert from type.

AI-assisted analysis of dotnet/wpf@81131a70a4 (2026-09-14). Data as JSON: /api/errors/1e83f3abf4bf264c. Report an issue: GitHub.

Appendix: source

Thrown at src/Microsoft.DotNet.Wpf/src/ReachFramework/Packaging/XpsInterleavingPolicy.cs:527

        //
        // When a flushing only the document,
        // the document sequence  and the XpsDocument could still not
        // be complete
        //
        private
        void
        ConfirmCommited()
        {
            foreach( InterleavingNode n in _interleavingNodes )
            {
                if(IsPartialFlushAllowed(n))
                {
                    continue;
                }
                if( !n.Commited )
                {
                    throw new XpsPackagingException(SR.ReachPackaging_DependantsNotCommitted);
                }
            }
        }

        /// <summary>
        /// Tests wether a part can be flushed with out being committed
        /// </summary>       
        private
        bool
        IsPartialFlushAllowed( InterleavingNode n )
        {
            bool ret = false;
            if(  n.Node is IXpsFixedDocumentWriter ||
                 n.Node is IXpsFixedDocumentSequenceWriter ||
                 n.Node is XpsDocument
                )
            {
                ret = true;

View on GitHub (pinned to 81131a70a4)