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POSimplest way to get a URI from an attribute value?
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2012-01-16T06:13:55.380
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2012-01-16T23:46:08.120
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2012-01-16T23:46:08.120
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In my XML, I have an element like <pre><code><myElement myAttribute="myNamespacePrefix:foobar"/> </code></pre> There is a xmlns declaration in this file: <pre><code><xmlns:myNamespacePrefix="http://www.mydomain.com/blah#"/> </code></pre> I want to make a URI from the value of myAttribute. IE, I want: <pre><code>http://www.mydomain.com/blah#foobar </code></pre> Sounds simple, doesn't it? So what is the simple solution? I couldn't find anything in the Framework or on MSDN, so I just had to write this no-doubt bug-ridden mess: <pre><code>public static Uri GetUri(string value, XElement containingElement) { if (value.Contains(":")) { var prefix = String.Concat(value.TakeWhile(c => c != ':')); XNamespace ns; if (containingElement.GetNamespaceOfPrefix(prefix) != null) ns = containingElement.GetNamespaceOfPrefix(prefix); else ns = containingElement.GetDefaultNamespace(); var localName = String.Concat(value.SkipWhile(c => c != ':').Skip(1)); Contract.Assert(ns != null); if (String.IsNullOrWhiteSpace(ns.NamespaceName)) return new Uri(value); else { StringBuilder sb = new StringBuilder(ns.NamespaceName); if (!ns.NamespaceName.EndsWith("#")) { sb.Append('#'); } return new Uri(String.Format(CultureInfo.CurrentCulture, "{0}{1}", sb.ToString(), localName)); } } else // no namespace prefix { String fragment; if (!value.StartsWith("#")) fragment = value.Insert(0, "#"); else fragment = value; var uriString = String.Format(CultureInfo.CurrentCulture, "{0}{1}", containingElement.BaseUri, fragment); return new Uri(uriString); } } </code></pre>
Tags
<c#><linq-to-xml><uri><xml-namespaces>
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Simplest way to get a URI from an attribute value?
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1. USNick A Miller
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1. USNick A Miller
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1. COIt is unclear what you are asking here. Do you just want to get the value of the myAttribute attribute and turn it into a Uri?
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 POSimplest way to get a URI from an attribute value?
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 USColinE
2. COYes. A fully qualified URI of course.
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 POSimplest way to get a URI from an attribute value?
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 USNick A Miller

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