I have a dropdown from boostrap such as this:
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-expanded="true">
<i class="fa fa-bell-o"></i>
<span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Another action</a></li>
</ul>
</div>
I'd like to add list items to this boostrap dropdown menu from my C# code behind. I'm adding items through a String foreach Loop. How do I access the dropdown id, since its not displayed in the code behind because it requires ASP controls?
You will need a repeater.
Repeater1.DataSource = yourdatasource
Repeater1.Databind()
<asp:Repeater id="Repeater1" runat="server">
<HeaderTemplate><Ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1"></HeaderTemplate>
<ItemTemplate>
<li role="presentation">
<a role="menuitem" href="#"> <%# Eval("yourfieldfromcodebhind here") %> </a>
</li>
</ItemTemplate>
</asp:Repeater>
Related
Below is the main code
<%# Master Language="C#" AutoEventWireup="true" CodeBehind="Site1.master.cs" Inherits="Webwite1.Site1" %>
<!DOCTYPE html>
<html>
<head runat="server">
<title></title>
<meta charset = "UTF-8" />
<link href="bootstrap/css/bootstrap.css" rel="stylesheet" />
<script src="bootstrap/js/bootstrap.js"></script>
<link rel = "stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.19/css/jquery.dataTables.min.css" />
<script type="text/javascript" language="javascript" src="https://code.jquery.com/jquery-3.3.1.js"></script>
<script type="text/javascript" language="javascript" src="https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js"></script>
<script src="https://kit.fontawesome.com/99d54f1718.js"></script>
<link href="css/customstylesheet.css" rel="stylesheet" />
<asp:ContentPlaceHolder ID="head" runat="server">
</asp:ContentPlaceHolder>
</head>
<body>
<form id="form1" runat="server">
<div>
<nav class="navbar navbar-expand-lg navbar-lg" style="background-color: #e3f2fd;">
<a class="navbar-brand" href="homepage.aspx">
<img src="imgs/books.png" width="30" height="30" />
Website Test
</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav me-auto">
<li class="nav-item active">
<a class="nav-link" href="homepage.aspx">Home</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">Internships</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">Research</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">Jobs</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">Clubs</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">Social</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">MyPages</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">Other</a>
</li>
</ul>
<ul class="navbar-nav">
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton4" runat="server" OnClick="LinkButton4_Click">View Books</asp:LinkButton>
</li>
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">User Login</asp:LinkButton>
</li>
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton2" runat="server" OnClick="LinkButton2_Click">Sign Up
</asp:LinkButton>
</li>
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton3" runat="server" OnClick="LinkButton3_Click" Visible="False">Logout</asp:LinkButton>
</li>
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton7" runat="server" OnClick="LinkButton7_Click" Visible="False">Hello user</asp:LinkButton>
</li>
</ul>
</div>
</nav>
</div>
<!-- Main Content Placeholder -->
<div>
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
<!-- Main Content Placeholder -->
<!-- Footer -->
<footer>
<div id="footer1" class="container-fluid">
<div class="row">
<div class="col-xs-12 col-sm-12 col-md-12 text-center">
<p>
<center><asp:LinkButton class="footerlinks" ID="LinkButton6" runat="server" OnClick="LinkButton6_Click">Admin Login</asp:LinkButton></center>
<asp:LinkButton class="footerlinks" ID="LinkButton11" runat="server" OnClick="LinkButton11_Click" Visible="False">Author Management</asp:LinkButton>
<asp:LinkButton class="footerlinks" ID="LinkButton12" runat="server" OnClick="LinkButton12_Click" Visible="False">Publisher Management</asp:LinkButton>
<asp:LinkButton class="footerlinks" ID="LinkButton8" runat="server" OnClick="LinkButton8_Click" Visible="False">Book Inventory</asp:LinkButton>
<asp:LinkButton class="footerlinks" ID="LinkButton9" runat="server" OnClick="LinkButton9_Click" Visible="False">Book Issuing</asp:LinkButton>
<asp:LinkButton class="footerlinks" ID="LinkButton10" runat="server" OnClick="LinkButton10_Click" Visible="False">Member Management</asp:LinkButton>
</p>
</div>
</div>
</div>
<div id="footer3" class="container-fluid">
<div class="row">
<div class="col-xs-12 col-sm-12 col-md-12 text-center">
<p>
<asp:LinkButton class="footerlinks" ID="LinkButton5" runat="server" OnClick="LinkButton5_Click">About Us</asp:LinkButton>
<asp:LinkButton class="footerlinks" ID="LinkButton13" runat="server" OnClick="LinkButton13_Click">Version History</asp:LinkButton>
<asp:LinkButton class="footerlinks" ID="LinkButton14" runat="server" OnClick="LinkButton14_Click">Contact Information</asp:LinkButton>
<asp:LinkButton class="footerlinks" ID="LinkButton15" runat="server" OnClick="LinkButton15_Click">Donate</asp:LinkButton>
<asp:LinkButton class="footerlinks" ID="LinkButton16" runat="server" OnClick="LinkButton16_Click">Report Issues</asp:LinkButton>
</p>
</div>
</div>
</div>
<div id="footer2" class="container-fluid">
<div class="row">
<div class="col-xs-12 col-sm-12 col-md-12 text-center">
<p style="color:whitesmoke">Text</p>
</div>
</div>
</div>
</footer>
<!-- ./Footer -->
</form>
</body>
</html>
Below is the CSS file that goes with the main code
.footerlinks {
color: #ffffff;
text-decoration: none !important;
}
.footerlinks:hover {
color: #ffd800;
}
#footer2 {
background: #0e47e3;
}
#footer3 {
background: #40d90d;
}
#footer1 {
background: #870ee3;
}
.badge-primary {
color: #ebeef0;
background-color: #B23CFD;
}
.card-body{
min-height: 800px;
}
.short-context{
min-height:400px;
}
In the main section, there is code:
<asp:LinkButton class="nav-link" ID="LinkButton4" runat="server" OnClick="LinkButton4_Click">View Books</asp:LinkButton>
I am trying to create a dropdown menu with several responsive buttons labeled A, B, C. Once you hover over "View Book", the options A, B, and C should show up.
I know how to do this in regular HTML without the ASP.net buttons.
Is there anyway to create a dropdown menu with the ASP buttons?
Thank you very much
I am not sure of "where" or "why" the confusing comes from in regards to asp.net controls such as a button, or a link button vs that of html markup?
I don't "much" see how these 2 issures are related to the question.
You have a bootstrap menu.
so, the simple question then is how can I have a drop drop trigger automatic on hover as opposed to having to click on that menu?
so, say this menu:
(I skpped some of the menu, but you get the idea).
so this:
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a runat="server" href="~/">Home</a></li>
<li><a runat="server" href="~/About">About</a></li>
<li><a runat="server" href="~/Contact">Contact</a></li>
<li id="mAdmin" runat="server" class="dropdown" ClientIDMode="Static">
<a runat="server" href="#" data-toggle="dropdown"
class="dropdown-toggle"
>Auto Buttons Dropdown Test<span class="caret"></span>
</a>
<ul class="dropdown-menu">
<li><a runat="server" href="~/SiteAdmin/Messages">Manage Portal Email Messages</a></li>
<li><a runat="server" href="~/Staff/CurrentUsersS">Show Logged on users</a></li>
<li><a runat="server" href="~/SiteAdmin/OneMonth">Month Logon Summary</a></li>
<li><a runat="server" href="~/SiteAdmin/EditChoices">Change/Edit Issue tracker choices</a></li>
<li><a runat="server" href="~/SiteAdmin/SetUp">Developer site settings</a></li>
<li><a onclick="hasproof()">My Proofs - testing</a></li>
<li><a runat="server" href="~/SiteAdmin/Issues">Issues Tracker and to-do list</a></li>
<li><asp:LinkButton ID="LinkButton1" runat="server">LinkButton Test</asp:LinkButton></li>
</ul>
</li>
</ul>
</div>
Now, the LAST choice is a "typical" and "standard" and "plain jane" example of a drop down in a bootstrap menu bar. (gain, ZERO to do with asp.net).
So, above results in this:
(note how I HAVE to click on the drop down).
However, you can have/set/enjoy the menu to drop down on hover.
Just add this style into the page
<style>
.dropdown:hover .dropdown-menu {
display: block;
margin-top: 0; /* remove the gap so it doesn't close */
}
</style>
Now, I don't have to click on the menu - just a hover will drop the menu bar, so it now works/looks like this:
And as your markup show, you "already" have some link buttons with a click event. And that looks rather fine also. (you can use a button, but the menu formatting applies MUCH better if you using a link button as your example shows. You still get/have/can/enjoy a click event, so it really now just a asp.net button.
So, the bootstrap menu, the goal and want of a "auto drop down" is really much 100% un-attached to the fact that this is asp.net.
it still mostly html, and a boostrap menu, and thus it does not really care if you have a standard "a" link, or a link button for that menu. However all those issues don't change the simple goal and question:
I want the drop down menu in the menu bar to automatic expand on hover.
Adding the above simple style to that page should thus then trigger, result in the menu drop down expanding without you having to click on that drop down you add/placed into the menu bar.
In Visual Studio, I create a new ASP.Net Core Web App
then I add a dropdown menu (as per Bootstrap documentation)
https://getbootstrap.com/docs/5.1/components/navbar/
the header porton of the html code looks like this:
<header>
<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
<div class="container">
<a class="navbar-brand" asp-area="" asp-page="/Index">WebApplication1</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent"
aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse d-sm-inline-flex flex-sm-row-reverse">
<ul class="navbar-nav flex-grow-1">
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-page="/Index">Home</a>
</li>
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-page="/Privacy">Privacy</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdown">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><hr class="dropdown-divider"></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
</header>
but the dropdown doesn't work. When I click it, no dropdown appears:
https://i.stack.imgur.com/szrE4.png
Be sure your Bootstrap version is v5.1, you can add the following css and js file to your project _Layout.cshtml:
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.1.1/css/bootstrap.min.css" integrity="sha512-6KY5s6UI5J7SVYuZB4S/CZMyPylqyyNZco376NM2Z8Sb8OxEdp02e1jkKk/wZxIEmjQ6DRCEBhni+gpr9c4tvA==" crossorigin="anonymous" referrerpolicy="no-referrer" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.1.1/js/bootstrap.min.js" integrity="sha512-ewfXo9Gq53e1q1+WDTjaHAGZ8UvCWq0eXONhwDuIoaH8xz2r96uoAYaQCm1oQhnBfRXrvJztNXFsTloJfgbL5Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
For Bootstrap v4.x, you need change your code to:
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
In Bootstrap 5.1, for dropdown,
✅ data-bs-toggle="dropdown"
❌data-toggle="dropdown"
In Bootstrap 4.0, for dropdown,
✅ data-toggle="dropdown"
❌data-bs-toggle="dropdown"
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav **mr-auto**">
<li class="nav-item active">
<a class="nav-link" href="homepage.aspx">Home</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">About Us</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">Terms</a>
</li>
</ul>
<ul class="navbar-nav">
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton4" runat="server">View Books</asp:LinkButton>
</li>
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton1" runat="server">User Login</asp:LinkButton>
</li>
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton2" runat="server">Sign Up</asp:LinkButton>
</li>
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton3" runat="server">Logout</asp:LinkButton>
</li>
<li class="nav-item active">
<asp:LinkButton class="nav-link" ID="LinkButton7" runat="server">Hello user</asp:LinkButton>
</li>
</ul>
</div>
See the navigation there is some margin left between the logo and the buttons
I imported this code form bootstrap but the first is not totally aligning left but the second is rightly aligned to the right hand sidesee I have inspected this but it looks fine to me
According to the documentation of Flex of Bootstrap 4:
Apply display utilities to create a flexbox container and transform direct children elements into flex items. Flex containers and items are able to be modified further with additional flex properties.
To enable this behavior you need to add one of the below d-flex classes to the container element, which in your case is the root div element:
<div class="collapse navbar-collapse d-flex" id="navbarSupportedContent">
Valid options are:
.d-flex
.d-inline-flex
.d-sm-flex
.d-sm-inline-flex
.d-md-flex
.d-md-inline-flex
.d-lg-flex
.d-lg-inline-flex
.d-xl-flex
.d-xl-inline-flex
I'm using bootstrap for toogle down menu bar. The code is:
<div class="row">
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-expanded="true">
Dropdown
<span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Something else here</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a></li>
</ul>
</div>
</div>
but it is not working properly. I'm facing the issue that whatever I'm displaying in these fields:
<li role="presentation"><a role="menuitem" tabindex="-1" href="#"></a></li>
It is not visible.
The items for the displaying are visible when I paste your code in my project. I think the problem is on your js. Try to add all the js for proper working of dropdown list.
Could anyone give me an idee on how could I generate dynamically this piece od code:
<div class="btn-group">
<button type="button" class="btn btn-default btn-lg dropdown-toggle" data-toggle="dropdown" runat="server">
<span class="caret"></span></button>
<ul class="dropdown-menu" id="testingPurposes">
<li>
<div>
<span class="text-left" onclick="fct1()"> Text nr 1</span>
<asp:Image ID="Image1" ImageUrl="myImg.png" runat="server" onclick="fct2()"/>
</div>
</li>
<li>
<div>
<span class="text-left" onclick="fct1()"> Text nr 2 </span>
<asp:Image ID="Image2" ImageUrl="myImg.png" runat="server" onclick="fct2()"/>
</div>
</li>
</ul>
</div>
The main idea of this code is to have some kind of dropdown list looking control that would have a span with text, and an image on each row.
This is basicly how my control shoud look when it's clicked:
Text1 img1
Text2 img2
If a user clicks TextN i get an event for that click, and i can update the page based on selected item.
If a user clicks imgN then TextN and imgN would disappear from the list.