I have the following problem.
I have a div (id = "outline") on my page.
Now I would like it to be set visible="false when clicked on a button.
The catch is it is way outside the container-div.
I've thought about using a Panel and then the Panel.FindControl
but then what happens with the </div>?
Server Side
You dont mention if you want to do this on the server side or via jquery / javascript (client side).
If on the server side set your div to runat="server" and in the code behind set the visibility to false.
So your HTML becomes <div id="outline" runat="server"> and your button click event has a single line:
outline.Visible=false;
Client Side
If you want to do this via jquery (which you should) just give the div an id and use a selector:
http://api.jquery.com/hide/
$('.target').hide();
Or via javascript if you aren't using jquery:
document.getElementById('outline').style.visibility = 'hidden';
Add a onclick to the button with a javascript like this:
document.getElementById('outline').style.visibility = "hidden"
You can also use "display: none" instead:
document.getElementById('outline').style.display = "none"
you havent mentioned that do you want to show the container div while disabling the "outline" div?? If so separate them and then try it..is the simple answer.... if you can not separate - group the part you want to hide in to separate div ( which does not incldued "container" div ) and then hide that part only.
Related
I am developing a website using asp.net/C#
I want to create a button that can save user data then move to a div tag at the same page.
I already did the saving part, but how do I make the same button to navigate to a different div tag within the same page?
some people use the response.redirect method to navigate to a different page. I want to navigate to a div tag within the same page. For example:
Experience
after I press that it will take me to:
<div class="panel" id="experience">
I want to do the same but with button that can do both that and saving to a DB. As I said, I already did the saving part.
I tried this:
<asp:Button ID="Button1" runat="server" Text="Save & Continue" OnClientClick="#experience" OnClick="Button1_Click" />
But it didn't work.
any ideas? I am trying to access that div tag from code behind
If this is WebForms and you don't want to use javascript, then, after you do the save, you can do a Response.Redirect to the same url, but with the anchor tag, e.g. Response.Redirect("myPage.aspx#experience").
This really depends on the rest of your code though. I suggest posting the relevant parts of your code behind so that we can better see what you have done. Also, don't try to avoid javascript - it is too useful to avoid.
ASP.NET has a Focus method that can be applied to the following ASP.NET server controls:
Button
LinkButton
ImageButton
CheckBox
DropDownList
FileUpload
HyperLink
ListBox
RadioButton
TextBox
At the end of your Button1_Click event handler code-behind, add something along this lines of this:
TextBoxExperience.Focus();
Note - The TextBox control with ID of TextBoxExperience control would be inside of the experience DIV.
I need to check if Javascript is enabled or not. If it is disabled I need to hide a placeholder. In this placeholder is a widget that is based on JS (jQuery).
When Javascript is disabled the user can only see a white box with wasted space.
I found out that I can use the <noscript> Tag to display content (for example a <p> with an ID to identify this state) when JS is disabled but I don't know how to implement a function that checks if this ID is shown to the user or not.
When the ID is shown it should hide the placeholder. Is there any solution for doing this with C#?
Thanks for any help.
You can set a CSS class on your body tag (or any appropriate parent tag) when you render the markup, and then use Javascript to change that class. When the class changes you can set different CSS stylings, including hiding markup:
Initial html:
<body class="no-js">
<div class="placeholder"></div>
</body>
Then some jQuery:
$( document ).ready(function() {
//Remove the no-js class and replace it with js
$(".no-js").addClass('js');
$(".no-js").removeClass('no-js');
});
And some CSS:
.no-js .placeholder{
display: none;
}
This way your CSS rule will default to hiding the placeholder, but jQuery will turn it back on again.
EDIT: jQuery is a little bit case sensitive ;)
You can do that with JavaScript as well. Sounds weird but yes.
You even don't have to check for an ID if it's shown or not. Just hide the placeholder initially with CSS. Then, if JavaScript is enabled, show the placeholder.
I need to run my JavaScript Code on Page Start.
<body onload="document.getElementById('Label1').style.display = 'none';document.getElementById('Textbox1').style.display = 'none';">
Currently I'musing a Onload property in Body Tag and using the code in that. By using in this way the code is running after the total page is loaded and it takes some time to make the label and the textbox to disappear.
Is there any way to run this code before the page Loads??
Or some other way in which I can accomplish this ?
(I'm using another JavaScript function to make the Label and Textbox Visible and Invisible basing on a DropdownList SelectedIndex so if I use properties like style="display:none" I could not make them visible again using JavaScript)
You don't need to make your html elements invisible with javascript when the page is being loaded. You can set them invisible with css using visibility:hidden or display:none and then set them visible with javascript like this:
document.getElementById("someobject").style.display="block";
OR
document.getElementById("someobject").style.visibility="visible";
Also if you are using jquery you can use
$(document).ready(function(){
});
Use jquery's $(document).ready(function(){ this is my code; });
I have a form in asp.net webpage which contains 2 drop down lists and a hyperlink + a button.
I want that if user changes an option is dropdowns to change navigate url.
I have done like so:
<asp:DropDownList ID="ddlPackages" AutoPostBack ="true" runat="server"
onselectedindexchanged="ddlPackages_SelectedIndexChanged"></asp:DropDownList>
and then I have the method defined.
The point is that I don't want to make a submit when I change the drop down. Can I do it using only aspx or I have to use javascript?
If I understand you correctly you want to change the href of the hyperlink based on the selected value of the dropdown. You can do this with javascript. Make sure you have AutoPostBack="false" and remove the OnSelectedIndexChanged attribute as well.
To do it using jQuery, use something like this:
<script type="text/javascript>
$(function(){
var $dropdown = $('#<%= ddlPackages.ClientId %>');
$dropdown.change(function(){
//Put logic to decide the link here based on the select value
var newPage = 'page' + $dropdown.val() + '.aspx';
$('#linkId').attr('href', newPage);
});
});
</script>
Edit:
In case you absolutely must have the logic for getting the new url based on the drop down value on the server side, you can turn the method into a Page Method and call it using ajax from the jQuery script above. But you can probably get away with creating the javascript dynamically in the aspx page instead.
I see two options:
1) Wrap the controls in an Update Panel (.NET 3+). Put AutoPostBack=true on the dropdownlist, and define a SelectedIndexChange event for it that changes the hyperlink control's Navigate URL property. When the user changes the dropdown, you're method will fire without the APPEARANCE of a form submission. Downside: there's a slight delay between the dropdown changing and the link changing. If your server is really, really slow, this delay could potentially cause problems (but this is probably unlikely).
2) Use custom JavaScript and do away with your .NET controls completely. This is what I would probably do, assuming you don't need to do anything else with these controls programatically. Your JavaScript function would monitor the dropdown for a SelectedINdexChange and adjust the href attribute of the anchor tag accordingly. Look into jQuery to speed up development if you aren't too familiar with plain JavaScript.
If the control is an ASP:DropDownList, you can use the AutoPostBack="True|False" property to prevent a postback
If you don't want to use the AutoPostBack you have to post the form using jQuery or Javascript
You can add an event on your drop down list onchange and add the code you need to post the form usin jQuery:
$('#formId').submit();
http://api.jquery.com/submit/
If you to want navigate to another Url add the below code at your DropDownList control (make sure AutoPostBack=false)
onchange="window.location.href='yourUrl'"
it would be better put that Javascript on a separate file anyway
Wondering if there is a way upon clicking on a hyper link to set drop downlist to visible in code behind or asp?
<asp:HyperLink ID="HyperLink2" runat="server">View More Workout Programs ยป</asp:HyperLink>
If you have to do it in code-behind, then use a LinkButton instead of a HyperLink. Then it will have a click event just like any button and in that click event you can set the other element to .Visible=true.
However, does this need to be done in code-behind? Keep in mind the difference in "visibility" between server-side and client-side code:
If set to .Visible=false on the server-side, the content is not delivered to the client at all.
If set to display:none on the client-side, the content is present and can be viewed in the page source, it's just not displayed by the browser.
In some cases, the former is needed for security purposes. But if it's just a matter of user experience then I would recommend showing/hiding the content entirely on the client-side so as to avoid post-backs that do nothing more than change element display properties.
For example (assuming jQuery):
<a id="toggler" href="#">Show the content</a>
<div id="hidden" style="display:none;">Content</div>
<script>
$(document).ready(function(){
$("#toggler").click(function(){
$("#hidden").show();
});
});
</script>
Use an asp:LinkButton instead of a hyperlink and handle the OnClick event. In the OnClick event, toggle myDropDownList.Visible depending on whether you want to show it or not.
You should implement that kind of feature in the client (javascript code) to improve user experience.
Anyway, you can use a Panel with Visibility=false and put Visibility=true in code behind when link is clicked. You would need to adjust the position of that panel with css to look like a dropdown.
You can try with JQuery : http://www.jquery.com
It will be something like
<script type="text/javascript">
$(document).ready(function(){
$("#<% =HyperLink2.ClientID %>").click(function() {
$("#<% =DropDownList1.ClientID %>").toggle();
});
});
</script>
If you need to send form back to the server, use asp:LinkButton instead and handle OnClick event on the server side. If you need to show drop down list on the client side, use javascript function with onclick client event to show or hide any section you want.