如何在网格ItemTemplate中隐藏/显示DIV？

<asp:GridView runat="server" ID="gridView">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <div id="myDiv" style='<%# GetDivVisibility(Eval("SomeProperty")) %>'>
                    <!-- DIV内容 -->
                </div>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected string GetDivVisibility(object propertyValue)
{
    // 根据属性值判断是否隐藏DIV
    if (propertyValue != null && propertyValue.ToString() == "SomeValue")
    {
        return "display: none;";
    }
    else
    {
        return "display: block;";
    }
}