What's New?

[CLOSED] Adding Item to Checkbox group by Direct Event

  1. #1
    May 31, 2010, 5:42 AM

    [CLOSED] Adding Item to Checkbox group by Direct Event

    Hey,

    I am unable to add Items to Checkbox Group through Direct Event.


    So if I have 
    chkGroup.Items.Add(chk);

    It will work on Page load, but not in Direct Event Ajax Request. I think you will not need an example for this, it looks pretty straightforward.


    Thanks,
    Last edited by Daniil; Jan 12, 2012 at 11:47 AM. Reason: Please use [CODE] tags
  2. #2
    May 31, 2010, 10:08 AM

    RE: [CLOSED] Adding Item to Checkbox group by Direct Event

    Hi,

    Unfortunatelly, Checkbox/Radio groups don't support adding/removing items after rendering. It is ExtJS limitation.
    I can suggest to rerender group during direct event (use Render, AddTo or InsertTo methods)
  3. #3
    May 31, 2010, 3:20 PM

    RE: [CLOSED] Adding Item to Checkbox group by Direct Event

    Should I re render after adding items or before adding items?

    Can u give me a small example...
  4. #4
    May 31, 2010, 6:52 PM

    RE: [CLOSED] Adding Item to Checkbox group by Direct Event

    Hi,

    Please see the following sample
    <%@ Page Language="C#" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<script runat="server">
    protected void AddCheckboxClick(object sender, DirectEventArgs e)
    {
        ((Ext.Net.Button)sender).Disabled = true;
        CheckboxGroup1.Items.Add(new Checkbox { BoxLabel = "Checkbox 4", Checked = true });
        CheckboxGroup1.Render(CheckboxGroup1.ContainerID, RenderMode.RenderTo);
    }

    protected void AddAnotherCheckboxClick(object sender, DirectEventArgs e)
    {
        ((Ext.Net.Button)sender).Disabled = true;
        // we have to recreate any previous dynamic added checkboxes
        CheckboxGroup1.Items.Add(new Checkbox { BoxLabel = "Checkbox 4", Checked = true });
        CheckboxGroup1.Items.Add(new Checkbox { BoxLabel = "Checkbox 5", Checked = true });
        CheckboxGroup1.Render(CheckboxGroup1.ContainerID, RenderMode.RenderTo);
    }
</script>
<!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 runat="server">
    <title>Ext.NET Example</title>
</head>
<body>
    <form runat="server">
        <ext:ResourceManager runat="server" />
        <ext:CheckboxGroup 
            ID="CheckboxGroup1" 
            runat="server" 
            ColumnsNumber="1">
            <Items>
                <ext:Checkbox runat="server" BoxLabel="Checkbox 1" />
                <ext:Checkbox runat="server" BoxLabel="Checkbox 2" />
                <ext:Checkbox runat="server" BoxLabel="Checkbox 3" />
            </Items>
        </ext:CheckboxGroup>
        <ext:Button 
            runat="server" 
            Text="Add checkbox" 
            OnDirectClick="AddCheckboxClick" />
        <ext:Button 
            runat="server" 
            Text="Add another checkbox" 
            OnDirectClick="AddAnotherCheckboxClick" />
    </form>
</body>
</html>
    Last edited by Daniil; Jan 12, 2012 at 11:48 AM.
  5. #5
    May 31, 2010, 6:56 PM

    RE: [CLOSED] Adding Item to Checkbox group by Direct Event

    Thanks!
  6. #6
    May 31, 2010, 7:15 PM

    RE: [CLOSED] Adding Item to Checkbox group by Direct Event

    Now I get the error "Lazy Control can be rendered with Automatic Render Mode Only."

    My CHeckbox group is inside a Drop Down Field which is under a Tab. Tab is not Active.
  7. #7
    May 31, 2010, 7:17 PM

    RE: [CLOSED] Adding Item to Checkbox group by Direct Event

    Hi,

    If group is lazy then you have to use Render without any arguments

Similar Threads

  1. [CLOSED] Adding menu items to button group dynamically in a direct event..
    By nhg_itd in forum 1.x Legacy Premium Help
    Replies: 2
    Last Post: May 21, 2012, 9:25 AM
  2. Help for treepanel item direct click event!NullReferenceException!
    By tms2003@126.com in forum 2.x Help
    Replies: 1
    Last Post: Mar 29, 2012, 9:52 AM
  3. [CLOSED] adding direct event to CommandColumn
    By Sevilay Tanış in forum 1.x Legacy Premium Help
    Replies: 5
    Last Post: Mar 23, 2012, 2:37 PM
  4. [CLOSED] Radio Group not submitting selection during Direct Event
    By vedagopal2004 in forum 1.x Legacy Premium Help
    Replies: 1
    Last Post: Apr 07, 2011, 4:17 PM
  5. [CLOSED] Adding Checkbox items to checkbox group during a postback?
    By vedagopal2004 in forum 1.x Legacy Premium Help
    Replies: 19
    Last Post: Feb 05, 2010, 10:13 AM

Tags for this Thread

Posting Permissions