如何在asp.net中显示链接按钮组中的选定链接按钮？

<asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">LinkButton 1</asp:LinkButton>
<asp:LinkButton ID="LinkButton2" runat="server" OnClick="LinkButton2_Click">LinkButton 2</asp:LinkButton>
<asp:LinkButton ID="LinkButton3" runat="server" OnClick="LinkButton3_Click">LinkButton 3</asp:LinkButton>

protected void LinkButton1_Click(object sender, EventArgs e)
{
    // 处理链接按钮1的点击事件
}

protected void LinkButton2_Click(object sender, EventArgs e)
{
    // 处理链接按钮2的点击事件
}

protected void LinkButton3_Click(object sender, EventArgs e)
{
    // 处理链接按钮3的点击事件
}

protected void LinkButton1_Click(object sender, EventArgs e)
{
    // 设置链接按钮1的样式为选定
    LinkButton1.CssClass = "selected";

    // 设置其他链接按钮的样式为未选定
    LinkButton2.CssClass = "";
    LinkButton3.CssClass = "";
}

protected void LinkButton2_Click(object sender, EventArgs e)
{
    // 设置链接按钮2的样式为选定
    LinkButton2.CssClass = "selected";

    // 设置其他链接按钮的样式为未选定
    LinkButton1.CssClass = "";
    LinkButton3.CssClass = "";
}

protected void LinkButton3_Click(object sender, EventArgs e)
{
    // 设置链接按钮3的样式为选定
    LinkButton3.CssClass = "selected";

    // 设置其他链接按钮的样式为未选定
    LinkButton1.CssClass = "";
    LinkButton2.CssClass = "";
}

    .selected {
        background-color: #007bff;
        color: #fff;
    }
</style>