Hello Tomas,

I am attaching a code-snippet that demonstrates how to get all of the errors in a XamSyntaxEditor at a particular time below. This code-snippet is from our WPF Samples Browser that you can install with the product, and it creates a full-document snapshot of the editor and uses the document’s SyntaxTree.RootNode.GetDiagnostics method to create a list of a “SyntaxErrorInfo” class internal to the samples browser to hold information about the errors. I hope this helps.

TextDocument doc = this.xamSyntaxEditor1.Document;

// create a text span of the whole document
TextSpan ts = new TextSpan(0, doc.CurrentSnapshot.Length);

// obtain errors from the whole document
IEnumerable<NodeDiagnostic> diagnostics = doc.SyntaxTree.RootNode.GetDiagnostics(ts);

List<SyntaxErrorInfo> list = new List<SyntaxErrorInfo>();
SyntaxErrorInfo seInfo;

foreach (NodeDiagnostic diagnostic in diagnostics)
{
	// Obtain the location of the error
	SnapshotSpan span = diagnostic.SnapshotSpan;
	TextLocation location = span.Snapshot.LocationFromOffset(span.Offset);

	// Create an info object and set message, location and snapshot span
	seInfo = new SyntaxErrorInfo()
	{
		Message = diagnostic.Message,
		Line = location.Line + 1,
		Character = location.Character + 1,
		Span = diagnostic.SnapshotSpan
	};

	// Add the error in the list
	list.Add(seInfo);
}

Please let me know if you have any other questions or concerns on this matter.