Multiple Control With Single Event Handler?

Jun 15, 2010

i try to create dynamic control and have a single event handler to ease the fireevent how do i do it?also can i declare a single event handler to parent control and be use by child control of the same type

in example:

creating htmlanchor name aa
aa.Control.Add(any anchor)
after adding the control
declare the event handler

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Single Event Handler For Multiple Links/buttons?

Mar 3, 2011

I have a dropdown list that contains a collection of names. My entire names list is very large (over 2,000) so I would like to pair down the names in the drop down list to those starting with the same letter.To do this I would like to have 26 links all on the same line, one for each letter in the alphabet ..

A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

The idea being that the user clicks on the letter they are interested in and the stored procedure that obtains the list of names is re-executed to only grab those names starting with the letter that was clicked and then the resulting dataset is rebound to the dropdown list.

What is vexing me is how to handle creating all the "Click Events" necessary to deal with the user "clicking" on a link. I could create 26 different event handlers, one for each link, but I have to believe there is a simpler way I am not seeing.Form demonstration here is the click event for one link, the letter "A" ...

Protected Sub lnkLetterA_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lnkLeterA.Click
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End Sub

Is there a way to create one event handler that could handle all 26 links?

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Using vb.net/asp.net 2005.

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[Code]....

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[Code]....

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Jul 25, 2012

I am creating a web control by addin the html in the code behind, like this:

Code:
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[Code] ....

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Code:
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protected void ddlBlist_SelectedIndexChanged(object sender, EventArgs e)
{
}

but this is not getting fire when i am changing the item of the dropdownlist.

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Mar 8, 2010

The code below creating a button control on my page dynamicly.

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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
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[Code]....

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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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Jul 16, 2010

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Nov 10, 2010

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public class LanguageSelection : WebControl
{
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[Code]....

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I have got most of this code online, which does not quite work, can something like this be done to produce a button click event to indicate that a built in button on the datapager control has been pressed ?

DataPager Pager1 = ListView1.FindControl("DataPager1") as DataPager;

{
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I've created a UserControl that is dynamically placed onto my page during the Init event. It populates and works great, but I'm left scratching my head at how to retrieve data from it during a postback.

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After selecting an item, the rendered HTML looks something like:

[code]....

I may be completely off track and this may actually be impossible (or a stupid idea). The only alternative I can think of is to emit actual ASP.NET controls and hook the built-in event handlers.

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I have a dropdownlist in a user control and i want to perform different functions on the basis of the host page that hosts this user control when the selected index of the dropdownlist changes e.g. when the host page is locations i want the event to load locations for the selected item in the dropdown, when the hosting page is services i want to load services for the selected item in the dropdown. What is the best possible way to achieve this scenario.

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Event Handler For The Activity Control In The Markup Of The Aspx Page?

Jun 24, 2010

I have created a web user control called Activity. I have defined a public-facing event on that web user control called OnActivityDelete. There is a delete button in the Activity control. When the delete button is clicked, the Activity control fires the OnActivityDelete event. I am using this web user control in a repeater. I assign an event handler to the OnActivityDelete event on the repeater's item data bound event. When I click the delete button for the Activity control, the event fires from the Activity control, but it never hits the event handler in the page that's using the control. (I have stepped into the code with the debugger and confirmed this behavior).

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Page's code behind:

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

If Not Page.IsPostBack Then
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Jan 26, 2016

I use this code to obtain a selected data from GridView control. I created a user control and reference it to ASPX page. However, for some reason I can not access public methods IndexChanged to retrieve information of selected line.

*
User controls:
*
Public gridRow As GridViewRow
Public Event IndexChanged As GridViewSelectEventHandler
*
Protected Sub GridView_SelectedIndexChanged (sender As Object, e As EventArgs) Handles gv.SelectedIndexChanged
******* gridRow = Grid.SelectedRow
******* RaiseEvent IndexChanged (sender, e)
End Sub
*

ASPX page:
*
*
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Apr 14, 2010

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I then have various types of controls, e.g. blog, articles etc, each of which may or may not have the commenting control added (which is done dynamically with me not knowing the id's), i.e. the commenting control is added outside this control. Each of these controls handles it's emailing differently(hence the event).

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COMMENTING CONTROL

public delegate void Commenting_OnSendEmail();
public partial class Commenting : UserControl
{
public Commenting_OnSendEmail OnComment_SendEmail();
private void Page_Load(object sender, EventArgs e)
{
if(OnComment_SendEmail != null)
{
OnComment_SendEmail();
}
}
}

PARENT CONTROL

public partial class Blog : UserControl
{
private void Page_Load(object sender, EventArgs e)
{
Commenting comControl = (Commenting)this.FindControl<Commenting>(this);
if(comControl != null)
{
comCtrol.OnComment_SendEmail += new Commenting_OnSendMail(Blog_Comment_OnSendEmail);
}
}
}

EDIT:

The reason I ask is that if I search from this.Page as the initial control, I am worried about time taken to search down the control tree to find it. Each different type of page would be different in how many control it would have. On some testing, it returns back quite quickly the result.

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