Gets the text value from the element located by the given XPath.

       

/*
 * RegExpress
 * 
 * Copyright (c) 2010, Daniel McGaughran
 * 
 * Licensed under the Apache Licence, Version 2.0 (the "Licence");
 * you may not use this file except in compliance with the Licence.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 * 
 */


using System;
using System.Xml;


namespace RegExpressModel.Utility
{
  static class XmlUtility
  {



    /// <summary>
    /// Gets the text value from the element located by the given XPath.
    /// </summary>
    /// <param name="sourceNode">The source element.</param>
    /// <param name="xPath">The XPath of the parent element.</param>
    /// <returns>The (first) string value if found. If the source element or XPath is invalid, null will
    /// be returned.</returns>
    internal static string GetTextValue(this XmlNode sourceNode, string xPath)
    {
      if (sourceNode == null || String.IsNullOrEmpty(xPath))
        return null;

      XmlNode targetParent = sourceNode.SelectSingleNode(xPath);
      string value = "";

      if (targetParent != null)
      {
        XmlNodeList children = targetParent.ChildNodes;

        foreach(XmlNode childNode in children)
        {
          if (childNode is XmlText || childNode is XmlCDataSection)
          {
            value = childNode.Value;
            break;
          }
        }
      }

      return value;
    }

  }
}

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Gets the text value from the element located by the given XPath. : XPath « XML « C# / C Sharp

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