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[CLOSED] [1.0] Combo box add event runtime

  1. #1
    Jan 04, 2010, 10:54 AM

    [CLOSED] [1.0] Combo box add event runtime

    Hi,

    first of all sorry for this topic title.
    Now i see it's the same of one of my previous topic (solved, thanks!), but now it's a different question...

    i need to add an server event runtime to a combo box.

    I try

    combo.AddEvents("MyEvent()")
    also with

    AddHandler Combo.ItemSelected, AddressOf MyEvent
    where MyEvent is something like this

    Public Sub MyEvent(ByVal sender As Object, ByVal e As System.EventArgs)
    Dim a As Integer = 0
    ...my code here
End Sub
    please, let me know how add this handler runtime to my combo.

    thanks in advance

  2. #2
    Jan 04, 2010, 12:51 PM

    RE: [CLOSED] [1.0] Combo box add event runtime

    Example

    protected void Page_Load(object sender, EventArgs e)
{
    if (!X.IsAjaxRequest)
    {
        this.ComboBox1.DirectEvents.Select.Event += ComboBox1_Select;
    }
}

protected void ComboBox1_Select(object sender, DirectEventArgs e)
{
    // do something
}
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  3. #3
    Jan 16, 2010, 7:54 AM

    RE: [CLOSED] [1.0] Combo box add event runtime

    Hi,
    your example is in C# but
    I use Vb.Net and I cannot find the last "EVENT":




    Combo.DirectEvents.Select.<U>Event</U>

    but only
    Combo.DirectEvents.Select....

    How can I add my handler?

    also AddHandler Combo... doesn't work


    Thanks
  4. #4
    Jan 18, 2010, 7:11 AM

    RE: [CLOSED] [1.0] Combo box add event runtime

    Hi,

    Does the following code help you?
    AddHandler Combo.ItemSelected.[Event], AddressOf MyEvent

    Also see
    http://forums.ext.net/showthread.php?postid=11934.aspx
  5. #5
    Jan 21, 2010, 9:37 AM

    RE: [CLOSED] [1.0] Combo box add event runtime

    Hi vladimir,
    i'm sorry but your code doesn't work and also the link you provide it's about "AjaxEvent"
    I don't find "AjaxEvent" under combo object.

    Now is it "Direct event" ? (I use 1.0)
    I did a test with "MyCombo.DirectEvents.Change", but i don't know how set the event...
    I canot fire my event on combo change in any way...
    Thanks

  6. #6
    Jan 21, 2010, 9:41 AM

    RE: [CLOSED] [1.0] Combo box add event runtime

    Hi,

    Please note that Change event fires when a field looses focus (blur event). If you need immediately reaction then use Select event
  7. #7
    Jan 21, 2010, 10:23 AM

    RE: [CLOSED] [1.0] Combo box add event runtime

    Hi,
    I try also with this:

    With Combo.DirectEvents.Select
      .EventMask.ShowMask = True
      .Complete = "CaricaCampiCollegati"
End With
    without any success...
    But it's right add a direct event in that way?

    With a button click I do:
    Dim BttnClose As New Ext.Net.Button
        BttnClose.Icon = Icon.BulletCross
        BttnClose.ID = "BTTN_CHIUDI_" &amp; Obj.ORMcampo.Campo
     
        BttnClose.DirectEvents.Click.ExtraParams.Add(New Parameter("CAMPO", Obj.ORMcampo.Campo))
        BttnClose.DirectEvents.Click.EventMask.ShowMask = True
        BttnClose.DirectEvents.Click.EventMask.Msg = "Chiusura filtro in corso..."
     
        AddHandler BttnClose.DirectClick, AddressOf BottoneChiudiFiltro
    and it's work!
    Note that i add all my control after a button click, so all combo and button controls don't exist at the 1st page.load event
    but i store all in a list and a re-create every postback
    [like the example you provide: http://forums.ext.net/showthread.php...231-16-1.aspx]

    The button event works, but about the combo event I don't know how i can do...
    Thanks
  8. #8
    Jan 21, 2010, 10:37 AM

    RE: [CLOSED] [1.0] Combo box add event runtime

    Hi,

    Does the following example work for you?
    <%@ Page Language="VB" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
    <head id="Head1" runat="server">                  
        <title>
        </title>
        
        <script runat="server">
            Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
                
                With Combo1
                    .DirectEvents.Select.EventMask.MinDelay = 1000
                    .DirectEvents.Select.EventMask.ShowMask = True
                    .DirectEvents.Select.EventMask.Msg = "Performing search..."
                    AddHandler .DirectEvents.Select.Event, AddressOf Combo1_Select
                End With
            End Sub
            
            Protected Sub Combo1_Select(ByVal sender As Object, ByVal e As DirectEventArgs)
                Ext.Net.X.Js.Alert("Done")
            End Sub

        </script>
    </head>
    
    <body>
        <form id="frmTemplate" runat="server">
            <ext:ResourceManager ID="ResourceManager1" runat="server"></ext:ResourceManager>           
            
            
            <ext:ComboBox ID="Combo1" runat="server">
                <Items>
                    <ext:ListItem Text="1" />
                    <ext:ListItem Text="2" />
                    <ext:ListItem Text="3" />
                </Items>
            </ext:ComboBox>
        </form>
    </body>
</html>
  9. #9
    Jan 21, 2010, 11:03 AM

    RE: [CLOSED] [1.0] Combo box add event runtime

    Hi Vlasch,
    first of all thanks for your quick reply!

    If I add a combo in markup, as you do, directly in ASPX page, your code works, but if I add my combo runtime, even if I provide to re-create and add handler every postback, the select combo event doesn't work.

    BUT now I found my mistake: i do a "render" of the panel that contain my combo BEFORE attach the event!
    now I do "render" after "AddHandler .DirectEvents.Select.Event, AddressOf Combo1_Select"
    and all work properly!

    Many thanks!



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