Hi,

My problem is that I cant set a default ComboBox value without a page load.


Here is an example with a delailed explanation below.

.aspx:
<%@ Page Title="Extranet Jhayber" Language="C#" 
    CodeBehind="Pruebaextnet.aspx.cs" Inherits="Extranet.Pruebaextnet" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<%@ Import Namespace="System.Collections.Generic" %>
<%@ Import Namespace="System.Xml" %>

<html>
<head>
	
</head>
<body>
<form runat="server">

    <ext:ResourceManager runat="server" />
    <ext:Viewport ID="Viewport1" runat="server" Layout="columnlayout" AutoScroll="true" >
        <Items>
                <ext:Panel runat="server" id="panel1" ColumnWidth="1" Height="800" Frame="true">
                    <Items>
                        <ext:ComboBox
                            id="ComboExample"
                            runat="server"
                            FieldLabel="Select a single state"
                            DisplayField="abbr"
                            Width="320"
                            LabelWidth="130"
                            QueryMode="Local"
                            TypeAhead="true"
                            ValueField="abbr">
                            <Store>
                                <ext:Store runat="server" id="Storecombo" AutoDataBind="true">
                                    <Model>
                                        <ext:Model runat="server">
                                            <Fields>
                                                <ext:ModelField Name="abbr" />
                                                <ext:ModelField Name="name" />
                                                <ext:ModelField Name="slogan" />
                                            </Fields>
                                        </ext:Model>
                                    </Model>

                                    <Reader>
                                        <ext:ArrayReader />
                                    </Reader>
                                </ext:Store>
                            </Store>
                        </ext:ComboBox>
                        <ext:Button runat="server" ID="button" Text="Combo default">
                            <DirectEvents>
                                <Click OnEvent="changecombo"></Click>
                            </DirectEvents>
                        </ext:Button>
                    </Items>
                </ext:Panel>
        </Items>
    </ext:Viewport>
       

</form>
</body>
</html>
aspx.cs:
namespace Extranet
{
    public partial class Pruebaextnet : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Storecombo.DataSource = TestData;
            Storecombo.DataBind();

            string defaultvalue = (string)(Session["default"]);
            if(!string.IsNullOrEmpty(defaultvalue))
            {
                this.ComboExample.SelectedItems.Add(new Ext.Net.ListItem() { Value = defaultvalue });
            }
            
        }

        protected void changecombo(object sender, EventArgs e)
        {
            this.ComboExample.SelectedItems.Add(new Ext.Net.ListItem() { Value = "AL" });

            Session["default"] = "AL";
        }

        private object TestData
        {
            get
            {
                return new object[]
                {
                new object[] { "AL", "Alabama", "The Heart of Dixie" },
                new object[] { "AK", "Alaska", "The Land of the Midnight Sun" },
                new object[] { "AZ", "Arizona", "The Grand Canyon State" },
                new object[] { "AR", "Arkansas", "The Natural State" },
                new object[] { "CA", "California", "The Golden State" },

                };
            }
        }
    }

}
What I want to do is to set the default value "AL" when I press the button, but this is not working. However, as you can see in the example, If I create a session with the default value "AL" and I do the same in the pageload, if i reload the page, It works nice.

I want to do this, without reloading the page and use a session variable.

Thank you for your time.