//去掉父节点及子节点旁的新增、修改、删除操作（写在onCommandColumnButtonInitialize事件中）

protected void Tree_Gooslist_CommandColumnButtonInitialize(object sender, TreeListCommandColumnButtonEventArgs e)

{

if (e.NodeKey != null)

{

TreeListNode node = this.Tree_Gooslist.FindNodeByKeyValue(e.NodeKey.ToString());

if (node.ChildNodes.Count > )

{

e.Visible = DevExpress.Utils.DefaultBoolean.False;

}

}

}

//只删除父节点旁的新增、修改、删除操作

protected void Tree_Gooslist_CommandColumnButtonInitialize(object sender, TreeListCommandColumnButtonEventArgs e)

{

if (e.NodeKey != null)

{

TreeListNode node = this.Tree_Gooslist.FindNodeByKeyValue(e.NodeKey.ToString());

if (node.Level == )

{

e.Visible = DevExpress.Utils.DefaultBoolean.False;

}

}

}

//前端代码：

<dx:ASPxTreeList ID="Tree_Gooslist" AutoGenerateColumns="False" ClientInstanceName="Tree_Gooslist" Width="20%" runat="server" KeyFieldName="cateid" ParentFieldName="parentid" Theme="Mulberry"

OnNodeUpdating="Tree_Gooslist_NodeUpdating" OnNodeDeleting="Tree_Gooslist_NodeDeleting" OnNodeInserting="Tree_Gooslist_NodeInserting" OnCellEditorInitialize="Tree_Gooslist_CellEditorInitialize"

OnNodeValidating="Tree_Gooslist_NodeValidating1" OnHtmlRowPrepared="Tree_Gooslist_HtmlRowPrepared">

<ClientSideEvents Init="TreeNodeClick" FocusedNodeChanged="TreeNodeClick" EndCallback="tree_EndCallback" />

<SettingsPager>

<FirstPageButton Visible="false" />

<LastPageButton Visible="false" />

<NextPageButton Visible="false" />

<PrevPageButton Visible="false" />

<PageSizeItemSettings Visible="false" />

</SettingsPager>

<Styles>

<AlternatingNode BackColor="Yellow">

<Border BorderWidth="" BorderColor="Transparent" />

</AlternatingNode>

<Header HorizontalAlign="Center"></Header>

<Header CssClass="tw-dtheader" HorizontalAlign="Center"></Header>

<CommandCell CssClass="tw-commandColumn"></CommandCell>

<FocusedNode CssClass="tw-focusRow"></FocusedNode>

<%--<CommandColumn CssClass="tw-commandColumn"></CommandColumn>

<CommandColumnItem CssClass="tw-commandColumnBtn"></CommandColumnItem>

<FocusedRow CssClass="tw-focusRow"></FocusedRow>--%>

</Styles>

<SettingsPopupEditForm Modal="true" HorizontalAlign="WindowCenter" VerticalAlign="WindowCenter" />

<Settings ShowColumnHeaders="true" ShowTreeLines="false" GridLines="Both" />

<SettingsBehavior AllowFocusedNode="true" AllowDragDrop="true" ProcessSelectionChangedOnServer="false" />

<Border BorderWidth="" BorderColor="Transparent" />

<Columns>

<dx:TreeListDataColumn FieldName="catename" Caption="分类名称" AllowSort="False" Width="10%"></dx:TreeListDataColumn>

<dx:TreeListComboBoxColumn FieldName="pricerange" Caption="价格范围" AllowSort="False" Width="5%"></dx:TreeListComboBoxColumn>

<dx:TreeListComboBoxColumn FieldName="PARENTID" Caption="父id" AllowSort="False" Visible="false" Width="5%"></dx:TreeListComboBoxColumn>

<dx:TreeListComboBoxColumn FieldName="LAYER" Caption="层级" AllowSort="False" Visible="false" Width="5%"></dx:TreeListComboBoxColumn>

<dx:TreeListCommandColumn Caption="功能" Width="5%">

<NewButton Visible="true" Text="[新增]"></NewButton>

<EditButton Visible="true" Text="[修改]"></EditButton>

<DeleteButton Visible="true" Text="[删除]"></DeleteButton>

<%-- <UpdateButton Visible="true" Text="[修改]"></UpdateButton>--%>

<%-- <CustomButtons >

<dx:TreeListCommandColumnCustomButton></dx:TreeListCommandColumnCustomButton>

</CustomButtons>--%>

</dx:TreeListCommandColumn>

</Columns>