TreeNode.Select Method ()
.NET Framework (current version)
Selects the current node in the TreeView control.
Assembly: System.Web (in System.Web.dll)
The following code example demonstrates how to use the Select method to select a node in the TreeView control.
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> void Button_Command(Object sender, CommandEventArgs e) { // Iterate through the child nodes of the root node and find // the nodes for Chapter One and Chapter Two. foreach(TreeNode node in LinksTreeView.Nodes[0].ChildNodes) { // Select the appropriate node based on which button was clicked. switch(node.Text) { case "Chapter One": // If the button clicked was "Chapter One", select the node // using the Selected property. if (e.CommandName == "Chapter One") { // Select the node using the Selected property. node.Selected = true; } break; case "Chapter Two": // If the button clicked was "Chapter Two", select the node // using the Select method. if (e.CommandName == "Chapter Two") { // Select the node using the Select method. node.Select(); } break; default: // Do nothing. break; } } } </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>TreeNode Selected and Select() Example</title> </head> <body> <form id="form1" runat="server"> <h3>TreeNode Selected and Select() Example</h3> <asp:TreeView id="LinksTreeView" Font-Names= "Arial" ForeColor="Blue" SelectedNodeStyle-BackColor="Yellow" ExpandDepth="2" runat="server"> <LevelStyles> <asp:TreeNodeStyle ChildNodesPadding="10" Font-Bold="true" Font-Size="12pt" ForeColor="DarkGreen"/> <asp:TreeNodeStyle ChildNodesPadding="5" Font-Bold="true" Font-Size="10pt"/> <asp:TreeNodeStyle ChildNodesPadding="5" Font-UnderLine="true" Font-Size="10pt"/> <asp:TreeNodeStyle ChildNodesPadding="10" Font-Size="8pt"/> </LevelStyles> <Nodes> <asp:TreeNode Text="Table of Contents"> <asp:TreeNode Text="Chapter One" Selected="True"> <asp:TreeNode Text="Section 1.0"> <asp:TreeNode Text="Topic 1.0.1"/> <asp:TreeNode Text="Topic 1.0.2"/> <asp:TreeNode Text="Topic 1.0.3"/> </asp:TreeNode> <asp:TreeNode Text="Section 1.1"> <asp:TreeNode Text="Topic 1.1.1"/> <asp:TreeNode Text="Topic 1.1.2"/> <asp:TreeNode Text="Topic 1.1.3"/> <asp:TreeNode Text="Topic 1.1.4"/> </asp:TreeNode> </asp:TreeNode> <asp:TreeNode Text="Chapter Two"> <asp:TreeNode Text="Section 2.0"> <asp:TreeNode Text="Topic 2.0.1"/> <asp:TreeNode Text="Topic 2.0.2"/> </asp:TreeNode> </asp:TreeNode> </asp:TreeNode> <asp:TreeNode Text="Appendix A" /> <asp:TreeNode Text="Appendix B" /> <asp:TreeNode Text="Appendix C" /> </Nodes> </asp:TreeView> <br /><br /> <asp:Button id="SelectChapterOneButton" Text="Select Chapter One" CommandName="Chapter One" OnCommand="Button_Command" runat="server"/> <asp:Button id="SelectChapterTwoButton" Text="Select Chapter Two" CommandName="Chapter Two" OnCommand="Button_Command" runat="server"/> </form> </body> </html>
.NET Framework
Available since 2.0
Available since 2.0
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