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<?xml version="1.0" encoding="utf-8"?>
<Type Name="XmlHierarchicalDataSourceView" FullName="System.Web.UI.WebControls.XmlHierarchicalDataSourceView">
<TypeSignature Language="C#" Value="public class XmlHierarchicalDataSourceView : System.Web.UI.HierarchicalDataSourceView" />
<AssemblyInfo>
<AssemblyName>System.Web</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Base>
<BaseTypeName>System.Web.UI.HierarchicalDataSourceView</BaseTypeName>
</Base>
<Interfaces />
<Docs>
<since version=".NET 2.0" />
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="T:System.Web.UI.WebControls.XmlDataSource" /> control can present its underlying data in both tabular and hierarchical format to Web server controls that bind to it. Controls such as <see cref="T:System.Web.UI.WebControls.GridView" /> or <see cref="T:System.Web.UI.WebControls.DropDownList" /> use the <see cref="T:System.Web.UI.WebControls.XmlDataSource" /> to bind to XML data and present it in list or tabular form, while controls that derive from the <see cref="T:System.Web.UI.WebControls.HierarchicalDataBoundControl" /> class, such as <see cref="T:System.Web.UI.WebControls.TreeView" />, bind to XML data and present it in hierarchical form.</para>
<para>The <see cref="T:System.Web.UI.WebControls.XmlDataSource" /> creates each view type internally through different code paths. If the <see cref="M:System.Web.UI.IDataSource.GetView(System.String)" /> method is called on the <see cref="T:System.Web.UI.WebControls.XmlDataSource" /> control, an <see cref="T:System.Web.UI.WebControls.XmlDataSourceView" /> object is created by the <see cref="T:System.Web.UI.WebControls.XmlDataSource" /> control. If the <see cref="M:System.Web.UI.WebControls.XmlDataSource.GetHierarchicalView(System.String)" /> method is called, an <see cref="T:System.Web.UI.WebControls.XmlHierarchicalDataSourceView" /> object is created. The <see cref="T:System.Web.UI.WebControls.XmlDataSourceView" /> class is provided for Web server controls that derive from <see cref="T:System.Web.UI.WebControls.DataBoundControl" /> and bind to lists and tabular data, while the <see cref="T:System.Web.UI.WebControls.XmlHierarchicalDataSourceView" /> is provided for Web server controls that derive from <see cref="T:System.Web.UI.WebControls.HierarchicalDataBoundControl" /> and bind to hierarchical data. Internally, the <see cref="T:System.Web.UI.WebControls.DataBoundControl" /> and <see cref="T:System.Web.UI.WebControls.CompositeDataBoundControl" /> classes call the <see cref="Overload:System.Web.UI.WebControls.XmlDataSourceView.Select" /> method of <see cref="T:System.Web.UI.WebControls.XmlDataSourceView" /> object view to retrieve data from a data source, while a class derived from <see cref="T:System.Web.UI.WebControls.HierarchicalDataBoundControl" /> calls the <see cref="M:System.Web.UI.WebControls.XmlHierarchicalDataSourceView.Select" /> method.</para>
<para>Like all <see cref="T:System.Web.UI.HierarchicalDataSourceView" /> helper objects, the <see cref="T:System.Web.UI.WebControls.XmlHierarchicalDataSourceView" /> defines the operations that the data source can perform with the underlying data. Because the <see cref="T:System.Web.UI.WebControls.XmlHierarchicalDataSourceView" /> class only overrides the <see cref="M:System.Web.UI.WebControls.XmlHierarchicalDataSourceView.Select" /> method, the associated <see cref="T:System.Web.UI.WebControls.XmlDataSource" /> control does not support sort expressions or execute, delete, or update operations. </para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Represents a data view on an XML node or collection of XML nodes for an <see cref="T:System.Web.UI.WebControls.XmlDataSource" /> control.</para>
</summary>
</Docs>
<Members>
<Member MemberName="Select">
<MemberSignature Language="C#" Value="public override System.Web.UI.IHierarchicalEnumerable Select ();" />
<MemberType>Method</MemberType>
<ReturnValue>
<ReturnType>System.Web.UI.IHierarchicalEnumerable</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<since version=".NET 2.0" />
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="T:System.Web.UI.IHierarchicalEnumerable" /> that is returned by <see cref="M:System.Web.UI.HierarchicalDataSourceView.Select" /> is an <see cref="T:System.Xml.XmlNodeList" /> and can be used like any <see cref="T:System.Collections.IEnumerable" /> collection. Call the <see cref="M:System.Collections.IEnumerable.GetEnumerator" /> method to get an <see cref="T:System.Collections.IEnumerator" /> and iterate through the collection of <see cref="T:System.Xml.XmlNode" /> nodes, or use foreach (in C#) or For Each (Visual Basic).</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Gets a list of the data items from the underlying data source.</para>
</summary>
<returns>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>An <see cref="T:System.Web.UI.IHierarchicalEnumerable" /> collection of data items based on the hierarchical level of the current view.</para>
</returns>
</Docs>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
</Members>
</Type>
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