internal static object ConvertFromHelper(ITypeDescriptorContext context, object value)
{
if (value == null)
{
return(null);
}
String stringValue = value as String;
if (stringValue == null)
{
return(null);
}
stringValue = stringValue.Trim();
if (stringValue == String.Empty)
{
return(null);
}
IXamlNamespaceResolver resolver =
context.GetService(typeof(IXamlNamespaceResolver)) as IXamlNamespaceResolver;
if (resolver == null)
{
return(null);
}
if (stringValue[0] == '{')
{
return(XName.Get(stringValue));
}
int indexOfColon = stringValue.IndexOf(':');
string prefix, localName;
if (indexOfColon >= 0)
{
prefix = stringValue.Substring(0, indexOfColon);
localName = stringValue.Substring(indexOfColon + 1);
}
else
{
prefix = string.Empty;
localName = stringValue;
}
string ns = resolver.GetNamespace(prefix);
if (ns == null)
{
throw FxTrace.Exception.AsError(new FormatException(SRCore.CouldNotResolveNamespacePrefix(prefix)));
}
return(XName.Get(localName, ns));
}
