Bug 1558 - [PATCH] Calling CreateNavigator on editable XPathNavigator returns non editable Navigator.
Summary: [PATCH] Calling CreateNavigator on editable XPathNavigator returns non editab...
Alias: None
Product: Class Libraries
Classification: Mono
Component: System.XML ()
Version: master
Hardware: PC Windows
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2011-10-19 06:16 UTC by Tom Hindle
Modified: 2012-01-19 06:03 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

Test case showing issue. (456 bytes, text/plain)
2011-10-19 06:16 UTC, Tom Hindle
patch to fix issue by enhancing XmlDocumentNavigator (1.09 KB, patch)
2011-10-19 08:02 UTC, Tom Hindle

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Description Tom Hindle 2011-10-19 06:16:09 UTC
Created attachment 718 [details]
Test case showing issue.

Given a editable XPathNavigator (XmlDocumentEditableNavigator on mono) - calling CreateNavigator returns a XmlDocumentNavigator.

This means that calling SetValue method always returns NotSupportedException.

as shown in this code snippet:

XmlDocument document = new XmlDocument();
document.LoadXml("<div>hello world</div>");
XPathNavigator navigator = document.CreateNavigator().CreateNavigator();			
navigator.SelectSingleNode("//div").SetValue("hello world 2");

Attached test case expected output:
<div>hello world 2</div>

Actually test case output:
Unhandled Exception: System.NotSupportedException: Operation is not supported.
  at System.Xml.XPath.XPathNavigator.SetValue (System.String value) [0x00000] in
  at SetValueTest.SetValueTest.Main (System.String[] args) [0x0001f] in SetValue
Comment 1 Tom Hindle 2011-10-19 08:02:27 UTC
Created attachment 719 [details]
patch to fix issue by enhancing XmlDocumentNavigator
Comment 2 Atsushi Eno 2012-01-19 06:03:47 UTC
Sorry for the late reply and thanks for the fix suggestion. Fixed the issue in git master e642e68.
I think this has to be fixed rather in XPathEditableNavigator that returned non-editable navigator. Now it returns just a clone so the returned navigator is still editable and your test case now works.