<%@ Page Language="C#" %><%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" <head runat="server"> <title>Ext.NET Example</title> <script type="text/javascript"> var onClick = function (node, e) { var t = Ext.get(e.getTarget()), cls, index; if (!t.hasClass("x-treegrid-col")) { t = t.up(".x-treegrid-col"); } cls = t.getAttribute("class"); index = parseInt(cls.substr(cls.length - 1)); if (!Ext.isNumber(index)) { index = 0; } Ext.Msg.alert("Click", String.format("Node id: {0}<br/>Column index: {1}", node.id, index)); }; </script></head><body> <ext:ResourceManager runat="server" /> <ext:TreeGrid runat="server" AutoHeight="true"> <Columns> <ext:TreeGridColumn Header="Text" DataIndex="text" Width="100" /> <ext:TreeGridColumn Header="Test1" DataIndex="test1" Width="100" Cls="my-column1" /> <ext:TreeGridColumn Header="Test2" DataIndex="test2" Width="100" Cls="my-column2" /> </Columns> <Root> <ext:TreeNode> <Nodes> <ext:TreeNode Text="Node1"> <CustomAttributes> <ext:ConfigItem Name="test1" Value="node1_test1" Mode="Value" /> <ext:ConfigItem Name="test2" Value="node1_test2" Mode="Value" /> </CustomAttributes> <Nodes> <ext:TreeNode Text="Node1.1"> <CustomAttributes> <ext:ConfigItem Name="test1" Value="node1.1_test1" Mode="Value" /> <ext:ConfigItem Name="test2" Value="node1.1_test2" Mode="Value" /> </CustomAttributes> </ext:TreeNode> </Nodes> </ext:TreeNode> </Nodes> </ext:TreeNode> </Root> <Listeners> <Click Fn="onClick" /> </Listeners> </ext:TreeGrid></body></html>摘自：http://forums.ext.net/showthread.php?17775-CLOSED-Treegrid-determine-what-column-was-clicked-on