/// <summary>Recursively removes duplicate namespace attributes from the specified <paramref name="element"/>.</summary>
/// <param name="element">Element to remove duplicate attributes from.</param>
internal static void RemoveDuplicateNamespaceAttributes(System.Xml.Linq.XElement element)
{
Debug.Assert(element != null, "element != null");
// Nesting XElements through our client wrappers may produce duplicate namespaces.
// Might need an XML fix, but won't happen for 3.5 for back compat.
HashSet <string> names = new HashSet <string>(EqualityComparer <string> .Default);
foreach (System.Xml.Linq.XElement e in element.DescendantsAndSelf())
{
bool attributesFound = false;
foreach (var attribute in e.Attributes())
{
if (!attributesFound)
{
attributesFound = true;
names.Clear();
}
if (attribute.IsNamespaceDeclaration)
{
string localName = attribute.Name.LocalName;
bool alreadyPresent = names.Add(localName) == false;
if (alreadyPresent)
{
attribute.Remove();
}
}
}
}
}
internal static void RemoveDuplicateNamespaceAttributes(System.Xml.Linq.XElement element)
{
Debug.Assert(element != null, "element != null");
HashSet <string> names = new HashSet <string>(EqualityComparer <string> .Default);
foreach (System.Xml.Linq.XElement e in element.DescendantsAndSelf())
{
bool attributesFound = false;
foreach (var attribute in e.Attributes())
{
if (!attributesFound)
{
attributesFound = true;
names.Clear();
}
if (attribute.IsNamespaceDeclaration)
{
string localName = attribute.Name.LocalName;
bool alreadyPresent = names.Add(localName) == false;
if (alreadyPresent)
{
attribute.Remove();
}
}
}
}
}
