Web Forms :: Event Handler - Building Usercontrols For Something Like A WebSite Kit
Jan 18, 2010
i've got a weired problem using an event-Handler in a Usercontrol I built. The Question to this is pretty simple. I don't get the "SelectedIndexChanged" Event on one of my ListBoxes which I turned to a Multiselection Dropdownlist with jQuery. It's a simple ListBox which should return the new values and should fire the "SIC" Event right? But it doesn't. I don't even get the new values as I try to change values and then read them. I spent more then 2 days searching for an appropriate answer but didn't find anything. As I tried to build a WebSite using some Usercontrols combined with AJAX I'm thinking about letting the Usercontrols out.
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Similar Messages:
Mar 3, 2010
My goal is to move as much code from the code behind page to the business logic layer. I'm having trouble with an event handler because the code can't see the method it will call (because the method is on the code behind page and the code in question is in a class in the BLL). CS0103: The name 'ButtonClick' does not exist in the current context (the error) b.Click += new EventHandler(ButtonClick); (the line)
Right now I'm considering to try it by adding the EventHandler from the code behind page after the PlaceHolder has been sent to the code behind page, but I'm wondering if I'm missing a better way. Is there a best practice for how to deal with this? Do I throw in the towel and just let the PlaceHolder be built on the code behind page (where it works fine)?
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Oct 3, 2010
Is there a technical reason for the existence of Page.PreLoad or is this just convenience to have a place where you can neatly place code that always have to be executed before the Load code? Is there a difference between adding code in the PreLoad event handler and adding code at the top of the Load event handler? And what would be a typical scenario where you use PreLoad?
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Feb 16, 2010
Programmatically Loading UserControls with Page_load Event?
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Jan 13, 2010
Pro-grammatically Loading UserControls with Page_load Event?
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Apr 24, 2010
Using vb.net/asp.net 2005.
I have a page books.aspx that has a control named authors.ascx.
Inside the authors control there is a "select" button I want to add some kind of listener or event handler (not sure of the correct terminology) so on the parent page (books.aspx) I can respond to the "select" button being clicked.
I have to pass the authorID from the user control to the parent page.
In my authors.ascx control I just created this event:
[Code]....
Now I need to write the function for SelectAuthorBtnClick and I think add some kind of listener in the parent page to listen and handle the event.
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Sep 29, 2010
I got an event handler like this, in this event, i wanted to call another button click event. How can I do that?
[Code]....
if (ds.Tables[0].Rows.Count == 0)
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Jan 26, 2010
i have two frames in a page. the fist one contains buttons the second one the form. i want to call an event from the second one after clicking a button in the first one ,
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Oct 23, 2010
This event handler is not responding at all to the click event. On click, the pagination numbers disappear and I'm not able to trace it in the debugger because the event handle doesn't even fire so I have no idea what's going on.
[Code]....
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Nov 13, 2010
I cant able to find the error page while building a website.
See the above 3rd line error in image.
So ,how to know where the exact error is occured.
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Nov 24, 2012
I am required to develop a page for news updates where user of the website can see the latest news updates with images in hindi. Like some news paper website. [URL] ....
When user click on the read more or on the title of the news complete news will displayed on news on new tab.
when admin of the website update the new it will appear on the page. where recently updated news is display first position.
admin of the website have authority to do following task
1. update the news.
2.edit the news.
3.delete the news
Can i make use of sqlserver for storing the news or xml.
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Feb 18, 2010
I'm in the process of converting an ASP.Net webform into a User control and there an event that now says
no suitable method found to override
the event code causing the compile error
protected override void OnPreInit(EventArgs e)
{
//do some stuff
base.OnPreInit(e);
}
Is there any equivalent for a user control?
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Aug 26, 2010
I have one main project for the cms we are using for our website. I have also created usercontrols to include in the site, but I think I would like to keep these in a separate project and just reference them in the main project. Is this a best practice and how would I do this?
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Mar 19, 2010
I have a Silverlight control on page which has a upload control. the silverlight exposes some events such as
StartUpload() => To start the file upload,
StopUpload() => To stop the file upload if running,
CheckFileStatus() => to check the status of the file upload.
The page has aspx Submit button with onclientclick event and ocClick event.
<asp:Button ID="btn_upload" Text="External Upload" runat="server" OnClientClick="Javascript:StartUpload();"
OnClick="btn_upload_Click" />
When I click on the aspx Submit Button, the file selected in Silverlight control should be uploaded and after the completion of upload, the Server side event should get called.
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Oct 18, 2010
Found this question on an interview siteGiven the following methods of the ASP .Net Page class, in which of them would you attach an event handler to an event published by a control on the web page?
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Jul 25, 2010
I would like to ask for advice how to build mvc web application for iPhone.
If you have any code sample, Good example how to start and get deep into it.
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Jul 28, 2010
i am writing a web application using visual studio 2008.
if the send button is clicked while running the application, it's event handlers executes twice for reasons i dont know and thereby returns the result two times.
the event handler is below:
[Code]....
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May 12, 2010
Previously, I have added the file using the fileupload control and then a separate SUBMIT button to push the file to the server... I now want the file immediately uploaded to the server when the individual selects the file they want.... what is the best way to do that?
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Feb 2, 2010
I want to building a website. I don't know step build a new website. I don't know use DataSet or create new class store connection string connection to DB ?
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Mar 8, 2010
The code below creating a button control on my page dynamicly.
I would like to add to the control's Click event a new event handler.
How should I do it?
i'm creating the control on Click-event of one of the pre-defined buttons( btnSubmit) on my the page and
not at the Load event of the page:
[Code]....
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May 26, 2010
I have LinkButton as the submit button in the web page. The problem I am facing is it is not calling servr side event handler.
The js function for 'onclientclick' is returning true but the method mapped to 'onclick' is not being called.
I tried putting alert message in onsubmit event also, that is also coming.
How to diagonise the issue? What are the possible reasons for this?
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Jun 29, 2010
Currently have Main.MasterPage, a MyNewPage.aspx (with master page file) and a use control with buttons. Should I load the events in the MyNewPage.aspx during the Page_load or during the InitializeComponent() ?
Example: MyNewPages.aspx (HTML)
[Code]....
Or Should I do this??
[Code]....
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Sep 19, 2010
I am building my first ASP.NET MVC site and this site needs to be in 2 languages.
When a user selects a language from the menu, the site would present itself in that language.
The content likely will be loaded all from resource files. Can I respond to a change in the culture definition at runtime so it load the correct resource file?
I want different URLs for both languages. Perhaps something like mysite.com/en/home/index.
Is this possible? The users should be able to forward and save links and that the site will be loaded in their language.
How can this be done with ASP.NET MVC?
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Jul 16, 2010
I have a web page where I'm dynamically loading one of a series of user controls. In each user control I call a general-purpose event to inform the web page that data on the user control has changed and/or new data is available. On the user control I define the Event Handler like this: public override event EventHandler DataOut_Handler; and then I force the event to occur like this:
DataOut_Handler(sender, e); On the web page I reload the previously loaded user control and wire up the event handler like this:
protected void Page_Init(object sender, EventArgs e)
{
DataEntryUserControlBase userControl = (DataEntryUserControlBase)LoadUserControl();
if (userControl != null)
userControl.DataOut_Handler += new EventHandler(UserControl_DataOut_Handler);
}
Note: It's "DataEntryUserControlBase" rather than "UserControl" because I constructed an intermediary base class to making casting simpler. Everything seems to work fine but I do have a question: When I step through my code, after the last line in Page_Init is executed I move the mouse cursor over top of userControl.DataOut_Handler but it reads null. The code is working fine but I'm most curious why I don't see any object associated with that item immediately after wiring up the event handler?
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Jan 15, 2010
Controls.Add(linkButton)
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