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[CLOSED] Load RadioGroup Item from database on Combo Select event

  1. #1
    May 16, 2010, 5:52 AM

    [CLOSED] Load RadioGroup Item from database on Combo Select event

    Hi,
    I mam trying to load the RadioGroup items from database on Combo Select event. The Select event gets fired and Radio Items are also added to the RadioGroup but I can't see these Item in the RadioGroup on the page.
    I am using the following approach

    Markup
    <ext:ComboBox runat="server" ID="ddl" FieldLabel="Type" DisplayField="Name" ValueField="Id" DataIndex="Id">
</ext:ComboBox>
<ext:RadioGroup runat="server" ID="group" FieldLabel="Some Name" DataIndex="Id">
                <Items>
                    <ext:Radio runat="server" ID="temp" Hidden="true">
                    </ext:Radio>
                </Items>
</ext:RadioGroup>
    Code Behind
    protected override void OnLoad(System.EventArgs e)
        {
            ddl.DirectEvents.Select.Event += ddl_Event;
            base.OnLoad(e);
        }

        void ddl_Event(object sender, Ext.Net.DirectEventArgs e)
        {
this.group.Items.Clear();
            //get records from database and add items to RadioGroup one by one
            foreach (DataRow dataRow in dataView.Table.Rows)
                {
                    this.group.Items.Add(new Radio { InputValue = dataRow["one"] + "", BoxLabel = dataRow["Two"] + "", Name = "SomeName",ID = "SomeId",GroupName = "groupName});
                }
        }
    Looking for a quick response.
    Thanks
  2. #2
    May 16, 2010, 8:30 PM

    RE: [CLOSED] Load RadioGroup Item from database on Combo Select event

    Hi,

    RadioGroup doesn't support adding items after rendering. It is ExtJS limitation. As you can see from ExtJS docs (http://www.extjs.com/deploy/dev/docs...orm.RadioGroup) there are no public methods to add/remove items to the group therefore you have to destory old group and create new

    <%@ Page Language="C#" %>

<%@ 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 runat="server">
    <title></title>

    <script runat="server">
        protected void AddClick(object sender, EventArgs e)
        {
            this.group.Destroy();

            RadioGroup newGroup = new RadioGroup { ID = "newGroup", FieldLabel = "Some Name", DataIndex = "Id" };
            newGroup.Items.Add(new Radio { InputValue = "inpValue", BoxLabel = "label", Name = "SomeName", ID = "SomeId", GroupName = "groupName" });
            newGroup.InsertTo(0, FormPanel1);
        }
    </script>

</head>
<body>
    <form id="form1" runat="server">
    <ext:ResourceManager ID="ResourceManager1" runat="server">
    </ext:ResourceManager>
    <ext:Button runat="server" Text="Add">
        <DirectEvents>
            <Click OnEvent="AddClick" />
        </DirectEvents>
    </ext:Button>
    <ext:FormPanel ID="FormPanel1" runat="server">
        <Items>
            <ext:RadioGroup runat="server" ID="group" FieldLabel="Some Name" DataIndex="Id">
                <Items>
                    <ext:Radio runat="server" ID="temp" Hidden="true">
                    </ext:Radio>
                </Items>
            </ext:RadioGroup>
            <ext:TextField runat="server" FieldLabel="TextField" />
        </Items>
    </ext:FormPanel>
    </form>
</body>
</html>

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