ASP.net菜單設計

Question

我有我的菜單：

        <asp:Panel runat="server" CssClass="menuLink" ID="mnuMyJobs">
            <a href="../jobs/index.asp">My Jobs</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuCreateSpec">
            <a href="../multipart/index.asp">Create Spec</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuArtworkTemplates">
            <img src="images/menuArrowR.png" class="menuArrow" alt="Selected" />
            <a href="#">Artwork Templates</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuAllReports">
            <a href="../reportingDashboard/index.asp?snavid=1">All Reports</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuBuyerReports">
            <a href="../buyerReports/index.asp?snavid=1">My Reports</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuSupplierReports">
            <a href="../supplierReports/index.asp?snavid=1">My Reports</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuContractPrices">
            <a href="../clientPrices/index.asp">Contract Prices</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuJobDirectory">
            <a href="../jobDirectory/index.asp">Job Directory</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuAddressBook">
            <a href="../addressBook/index.asp">Address Book</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuMyAccount">
            <a href="../account/index.asp">My Account</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuUserManager">
            <a href="../manage/userManager.asp">User Manager</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuCampaignManager">
            <a href="../campaignManager/indexMenu.asp?snavid=0">Campaign Manager</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuPackingConfig">
            <a href="../packingManager/index.asp?snavid=1">Packing Config</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuTemplateManager">
            <a href="../templateManager/index.asp?snavid=0">Template Manager</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuStockManager">
            <a href="../stockManager/index.asp?snavid=0">Stock Manager</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuHelpCentre">
            <strong><a href="../helpCentre/index.asp?snavid=1">Help Centre</a></strong>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuApprovalManager">
            <a href="../approvalManager/index.asp?snavid=1">Approval Manager</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuAdmin">
            <a href="../admin/search.asp?snavid=1">Admin</a>
        </asp:Panel>
        <asp:Panel runat="server" CssClass="menuLink" ID="mnuLogout">
            <a href="LoginHandler.ashx?userID=-1">Logout</a>
        </asp:Panel>

在我的代碼后面：

// Hide/show menu items
            mnuCreateSpec.Visible = loginData.loggedInUser.isBuyer;
            mnuBuyerReports.Visible = loginData.loggedInUser.isBuyer;
            mnuSupplierReports.Visible = loginData.loggedInUser.isSupplier;
etc

我知道這不是最棒的設計^，但必須與舊系統向后兼容。 我的問題是，當菜單項被“選中”時，面板應該是圖像：

<asp:Panel runat="server" CssClass="menuLink" ID="mnuArtworkTemplates">
                <img src="images/menuArrowR.png" class="menuArrow" alt="Selected" />
                <a href="#">Artwork Templates</a>
            </asp:Panel>

如何將該圖像動態添加到正確的面板中？ 我真的不想在每個面板中使用文字控件，還是我唯一的選擇？ 這個函數'選擇'正確的面板，我需要用這個函數以某種方式插入圖像

public void selectMenu(Panel menuToSelect)
{
    menuToSelect.CssClass = "menuLink selected";
}

Answer 1

如果圖像總是相同，則可以將其放入標記中，並默認將其設置為不可見：我的工作

然后，當您的面板被選中時，使其顯示為pnlSelectedImg 。

public void SelectMenu (Panel menuToSelect){
    ((Image)(menuToSelect.FindControl("pnlSelectedImg")).Visible = true;
}

那樣的東西？

Answer 2

另一種方法是創建圖像並將其添加到面板：

                    mnuArtworkTemplates.Controls.Add(new Image
                                      {
                                          ImageUrl = "images/menuArrowR.png",
                                          CssClass = "menuArrow",
                                          AlternateText = "Selected"
                                      });

Answer 3

弄清楚了：

        // Add the arrow image
        Image arrowImage = new Image();
        arrowImage.ImageUrl = "images/menuArrowR.png";
        arrowImage.CssClass = "menuArrow";
        arrowImage.AlternateText = "Selected menu item";
        menuToSelect.Controls.Add(arrowImage);