XmlHierarchicalDataSourceView.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / XmlHierarchicalDataSourceView.cs / 1 / XmlHierarchicalDataSourceView.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.WebControls { 
 
    using System;
    using System.Collections; 
    using System.ComponentModel;
    using System.Data;
    using System.Drawing.Design;
    using System.Security.Permissions; 
    using System.Text;
    using System.Web; 
    using System.Web.UI; 
    using System.Web.Util;
    using System.Xml; 



    ///  
    /// Represents a hierarchical view of an XmlDataSource.
    ///  
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
    [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    public class XmlHierarchicalDataSourceView : HierarchicalDataSourceView { 

        private XmlDataSource _owner;
        private string _viewPath;
 
        /// 
        /// Creates a new instance of XmlHierarchicalDataSourceView. 
        ///  
        internal XmlHierarchicalDataSourceView(XmlDataSource owner, string viewPath) {
            Debug.Assert(owner != null); 
            _owner = owner;
            _viewPath = viewPath;
        }
 

 
        public override IHierarchicalEnumerable Select() { 
            XmlNode root = _owner.GetXmlDocument();
 
            XmlNodeList nodes = null;
            if (!String.IsNullOrEmpty(_viewPath)) {
                XmlNode node = root.SelectSingleNode(_viewPath);
                if (node != null) { 
                    nodes = node.ChildNodes;
                } 
            } 
            else {
                if (_owner.XPath.Length > 0) { 
                    nodes = root.SelectNodes(_owner.XPath);
                }
                else {
                    nodes = root.ChildNodes; 
                }
            } 
 
            return new XmlHierarchicalEnumerable(nodes);
        } 
    }
}

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