2 // System.Web.UI.XPathBinder
5 // Ben Maurer (bmaurer@users.sourceforge.net)
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 using System.Collections;
33 using System.Collections.Specialized;
35 using System.Xml.XPath;
38 namespace System.Web.UI {
39 public sealed class XPathBinder {
40 private XPathBinder ()
44 public static object Eval (object container, string xpath)
46 return Eval (container, xpath, (IXmlNamespaceResolver)null);
49 public static object Eval (object container, string xpath, IXmlNamespaceResolver resolver)
51 if (xpath == null || xpath.Length == 0)
52 throw new ArgumentNullException ("xpath");
54 IXPathNavigable factory = container as IXPathNavigable;
57 throw new ArgumentException ("container");
59 object result = factory.CreateNavigator ().Evaluate (xpath, resolver);
61 XPathNodeIterator itr = result as XPathNodeIterator;
64 return itr.Current.Value;
72 public static string Eval (object container, string xpath, string format)
74 return Eval (container, xpath, format, null);
77 public static string Eval (object container, string xpath, string format, IXmlNamespaceResolver resolver)
79 object result = Eval (container, xpath, (IXmlNamespaceResolver)null);
83 if (format == null || format.Length == 0)
84 return result.ToString ();
86 return String.Format (format, result);
89 public static IEnumerable Select (object container, string xpath)
91 return Select (container, xpath, null);
94 public static IEnumerable Select (object container, string xpath, IXmlNamespaceResolver resolver)
96 if (xpath == null || xpath.Length == 0)
97 throw new ArgumentNullException ("xpath");
99 IXPathNavigable factory = container as IXPathNavigable;
102 throw new ArgumentException ("container");
104 XPathNodeIterator itr = factory.CreateNavigator ().Select (xpath, resolver);
105 ArrayList ret = new ArrayList ();
107 while (itr.MoveNext ()) {
108 IHasXmlNode nodeAccessor = itr.Current as IHasXmlNode;
109 if (nodeAccessor == null)
110 throw new InvalidOperationException ();
111 ret.Add (nodeAccessor.GetNode ());