I have a jQueryUI dialog with some textboxes, plus a button. Right now, the asp:Button tag used to generate the button automatically sets its type as type="submit". The structure of the dialog is such that pressing enter at any of the textboxes should not call the button click event. It seems like the cleanest way to solve the problem, if it is doable, is to manually set the button's type to something other than submit. Is there a way to do this?
Edit: Forgot to mention this, but the button text is bound to a database item by <%# Eval() %>, which doesn't work without a server-side tag.
"
UseSubmitBehavior="false"
OnClientClick="return" />
The UseSubmitBehavior property tells ASP.NET to render as type="button" and inserts a __doPostBack() function call into the onclick property. The text of the OnClientClick property gets prepended to the client-side onclick event (with a trailing semicolon if you don't include it yourself), therefore putting return simply short-circuits the event handler and ends up doing nothing at all.
You can use just a regular html button and set it to whatever you want. It doesn't have to be a serverside asp button.
In your aspx file:
<input type="button" value="My Button" onclick="DoSomeScript();" />
I don't think you can set the Button control's AutoPostBack to false, which would normally do what you want.
In this case, I would simply not use asp:Button and just use <input type='button'>.
Related
Hi everybody i have the next problem. I have to set a button as default when i press Enter. I can use DefaultButton in the Form because now all my pages inherits from Master Page and i have a Content from the Master Page and this isn't work. Somebody could give me any alternative to solve this please. Thanks
According to Enter Key - Default Submit Button:
ASP.NET 2.0 introduces a wonderful work around for this. By simply
specifying the "defaultbutton" property to the ID of the ,
whose event you want to fire, your job is done.
The defaultbutton property can be specified at the Form level in the
form tag as well as at panel level in the definition tag.
The form level setting is overridden when specified at the panel
level, for those controls that are inside the panel.
Also, the Event Handler for the specified button, fires thereby
simulating a true submit button functionality.
Like this
<form id="form1" runat="server" defaultbutton="Button1">
<div>
<asp:Button ID="Button1" runat="server" Text="Button1" OnClick="Button1_Click" />
</div>
Or you can achieve this by
Page.Form.DefaultButton = crtlLoginUserLogin.FindControl("LoginButton").UniqueID
or just
Page.Form.DefaultButton = LoginButton.UniqueID
This will work.
One way is through to recursively search through all your child pages controls and find the first button, get the id and set the default button of your form.
Although I have never tried this, I dont think its a very good idea as it is slow and error prone.
An alternative may be to do it through javascript/jquery, see this answer:
Submit form with Enter key without submit button?
I am trying to write a simple HTML form using asp.net and Jquery UI but am running into a problem when trying to process click event handlers on a button within this form. I was tryign to use OnClientClick and OnClick but once the clientside method gets accessed and returns the boolean the server side method is not called accordingly( not called at all actually)
Linky to code since I could not get the code tags to work properly: http://pastebin.com/LZNMqASt
I found the problem, Actually you are displaying "div#loginForm" element in to the dialog and its not taking the form element.
Put form element inside of "div#loginForm" container and the problem will be fixed.
For some reason the return type of the javascript method was not being accepted as a valid boolean. The below solution fixes the OnClientClick event
<asp:Button runat="server" ID="btnLogin" Text="Login" OnClick="btnLogin_OnClick"
OnClientClick="if(ValidateLoginForm() != true) return(false);" UseSubmitBehavior="False" />
Within an ASP.Net application I have, there is a textbox that gets a date from a CalendarExtender. When the textbox is populated it checks that date with another date on the form and displays a modalpopupextender popup if the dates are wrong. However, I DO NOT want to allow user input into this textbox, so when I set the ReadOnly field to false and tried Enabled to false, it doesn't allow manual entry however it ALSO disabled the postback and will not call the TextChanged event to fire the modalpopupextender.
So is there a way to disable manual entry and not set it to ReadOnly?
I figured it out, simply enter onkeypress="return false;" within the HTML tag
Try this
<asp:textbox id="txt1" onfocus="blur()" runat="server"/>
this worked for me.
Add the below properties in the tag of textbox
onkeydown="return false" onpaste="return false"
ex:
<asp:TextBox ID="TillDate_TextBox" runat="server" onkeydown="return false" onpaste="return false"></asp:TextBox>
the first property block typing in textbox and the second property block pasting in it
I'm not familiar with the exact components you are using, however the usual way to accomplish things like this is the following. Have selecting the date on the calendar modify the value of a hidden form field. This will restrict the user from editing the value directly. Then create another element like a div or a span, and use javascript to update the span/div to the value selected on the calendar.
I wanted to do something like this:
<asp:Label ID="lblMyLabel" onclick="lblMyLabel_Click" runat="server">My Label</asp:Label>
I know that in Javascript I can do:
<span onclick="foo();">My Label</span>
So I'm wondering why I can't do that with a Label object.
You can use Attributes to add onclick client side callback.
I didn't know you can do this on span tags, but if it works you can add 'onclick' by lblMyLabel.Attributes.Add("onclick", "foo();");
But foo(); would need to be a client side javascript function.
System.Web.UI.WebControls.Label does NOT have OnClick server event. You could look into using AJAX if you want server callback with example above.
You could also use LinkButton like other say. You can make it not look like a link by using CSS, if it is just that underline you are concerned about.
ASPX:
<asp:LinkButton ID="LinkButton1" runat="server"
CssClass="imjusttext" OnClick="LinkButton1_Click">
LinkButton
</asp:LinkButton>
CSS:
a.imjusttext{ color: #000000; text-decoration: none; }
a.imjusttext:hover { text-decoration: none; }
Your question doesn't specify if you mean to raise the click event on the server (VB or c#) or the client (javascript.) If you're looking for a server-side event you should use a link button with css that makes the link appear as a label. You can then use the link button's server-side click event. If you're looking for a client-side click event - just type it into your server control markup asp:label id="MyLabel" runat="server" onclick="javascript:alert('hello');" Text="Click Me"; ASP.NET will emit additional attributes in the html markup that generates.
You can do it in code in the page_load eg:
void Page_Load(object sender, EventArgs e)
{
lblMyLabel.Attributes.Add("onclick",
"javascript:alert('ALERT ALERT!!!')");
}
If you want an onclick event, why don't you use a linkbutton, which has the onclientclick event:
<asp:linkbutton id="lblMyLink" onclientclick="lblMyLink_Click" runat="server">My Label</asp:linkbutton>
You can use CSS to make the link look like whatever you want
I think you can, but it's a client-side onclick handler, not server side. It will complain about the attribute not being supported (or some such) but I think it renders correctly. If you want to to a server-side handler, I think you'll need to do a LinkButton.
As far as I know that's impossible. Label control emits <span> element which is “unclickable” on the server side. You would need to replace your Label control with a LinkButton.
Another hack would be to use a hidden link or button with style="display:none;" and trigger the click on the server control from a javascript function in the span.
Something like this:
<asp:linkbutton id="lblMyLink" onClick="lblMyLink_Click" runat="server" style="display:none;">My Link</asp:linkbutton>
<span onclick="document.getElementById('lblMyLink').click();">My Label</span>
you could always roll out your own control which produces a span, with the .net's standard postback javascript, but as stated earlier using a linklabel with a CSS class would be easier
Just to chime in on this issue,
I used a label in my .aspx page that was only to be visible in my DataList Item template if there were child records in the dataset.
I added a onclick function to the label:
moreOptionsLabel.Attributes.Add("onclick", string.Format("toggle_visibility('{0}')", div.ClientID));
in my .cs file. It will now control a div tag in the .aspx page to show or hide the records - because the onclick points to a client side javascript function. Notice the div.ClientID, that makes this workable in a datalist.
As noted above - the span tag does indeed become functional with "onclick". And since the label control is rendered as a span after the page request, using the Addtribute.Add("onclick".... does work.
The result is show/hide functionality of data with out doing a postback. If you use the LinkButton, or simlar controls - the postback and page reload is unavoidable - unless you want to get into some Ajax stuff.
NOTE: the span tag won't look clickable unless you style it with an underline and hand cursor.
Credit to this idea comes from Will Asrari over at http://www.willasrari.com/blog/display-nested-repeaters-and-gridviews-asynchronously/000292.aspx
You need to create a class object that inherits from the label and onclick event handler which will be a method by yourslef and use your object as a custom label.
Is there a way to specify some JavaScript to execute on the OnBlur event of an ASP.NET text box? It seems to me like if I add any event handlers to the TextBox object they will just cause postbacks to the server isntead of doing what I want. Basically, I just want to be able to have the textbox be rendered in this HTML:
<INPUT type="text" onblur="alert('1234')" />
Thanks!
Could also go for:
<asp:TextBox runat="server" onblur="Javascript:alert('1234');" />
if you dont feel like setting it up in the codebehind.
Im guessing the reason why you end up with postbacks, must be because you have set AutoPostBack on the textbox to true. That makes the textbox postback when the client-side onchange event is triggered. Switch it to false, and it will act as a normal input-element.
In your codebehind, add this:
myTextBox.Attributes.Add("onblur","alert('1234');");