asp.net - TreeView — 所选节点样式不会出现在所选节点中

Question

我的代码是:

            <asp:TreeView ID="TreeViewCategories" runat="server" ExpandDepth="0" Style="min-height: 200px;
                max-height: 500px;" LineImagesFolder="~/TreeLineImages" NodeIndent="0" LeafNodeStyle-CssClass="LeafNodesStyle"
                CssClass="TreeView" NodeStyle-CssClass="NodeStyle" ParentNodeStyle-CssClass="ParentNodeStyle"
                RootNodeStyle-CssClass="RootNodeStyle" SelectedNodeStyle-CssClass="SelectedNodeStyle"
                LeafNodeStyle-Width="100%" NodeStyle-Width="100%" ParentNodeStyle-Width="100%"
                RootNodeStyle-Width="100%" Font-Size="12pt">
                <Nodes>
                    <asp:TreeNode Text="All Items" SelectAction="Expand" PopulateOnDemand="True" Value="All Items" />
                </Nodes>
            </asp:TreeView>

CSS

.TreeView  
{
    border-bottom:1px dotted #B2B2B2 !important;
}

.TreeView div
{
    margin-left:5px;
}

.TreeView table
{
    border-top:1px dotted #B2B2B2 !important;
}

.TreeView div table
{
    border-bottom:none !important;
    border-top:none !important;
}

.TreeView table td
{
    padding:2px 0;
}

.LeafNodesStyle 
{

}

.RootNodeStyle 
{

}

/* ALL ELEMENTS */

.NodeStyle 
{

}

.ParentNodeStyle 
{
    /*background:yellow;*/
}

.SelectedNodeStyle { font-weight: bold; color:#6799D1; display:block; padding:2px 0 2px 3px; }

所以我看到(使用 Firebug )我选择的节点出现 Visited style ， node style ， leaf style 但不是 Selected node style :(

如何修复此 HTML/CSS/ASP 以使所选节点变为粗体和蓝色？

谢谢。

添加:像这里添加节点:

            foreach(c : Category in rootCategories)
            {
                mutable newNode : TreeNode = TreeNode(c.Title, c.Id);
                newNode.SelectAction = TreeNodeSelectAction.SelectExpand;
                newNode.NavigateUrl = "Items.aspx?catId=" + c.Id.ToString() + "&lvl=0";

用...解决

categoryId : string = Request.QueryString["catId"];
n : TreeNode = findNode(categoryId, TreeViewCategories.Nodes, lvl);
n.Selected = true;

Answer 1

asp:TreeNode 上的 SelectAction 属性是 Expand，将其更改为 SelectExpand .

这确保有一个回发并且重新绘制树控件以应用您在 TreeView 上设置的选定节点样式

<asp:TreeView ID="TreeViewCategories" runat="server" ExpandDepth="0" Style="min-height: 200px;
        max-height: 500px;" LineImagesFolder="~/TreeLineImages" NodeIndent="0" LeafNodeStyle-CssClass="LeafNodesStyle"
        CssClass="TreeView" NodeStyle-CssClass="NodeStyle" ParentNodeStyle-CssClass="ParentNodeStyle"
        RootNodeStyle-CssClass="RootNodeStyle" SelectedNodeStyle-CssClass="SelectedNodeStyle"
        LeafNodeStyle-Width="100%" NodeStyle-Width="100%" ParentNodeStyle-Width="100%"
        RootNodeStyle-Width="100%" Font-Size="12pt">
        <Nodes>
            <asp:TreeNode Text="All Items" SelectAction="SelectExpand" Value="All Items">
                <asp:TreeNode Text="All Items" SelectAction="SelectExpand" Value="All Items" />
                <asp:TreeNode Text="All Items" SelectAction="SelectExpand" Value="All Items" />
                <asp:TreeNode Text="All Items" SelectAction="SelectExpand" Value="All Items" />
            </asp:TreeNode>
        </Nodes>
    </asp:TreeView>