Hello,

I have a problem with setting value "NULL" (as text) to ComboBox. I think it is a bug.

A workaround is to add "null" (lowercase) to the combobox list (and then set Value = "null").

Ext.Net version 3.3

Regards
P.K.

test.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="pages_test" %>

<!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>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>
test.aspx.cs
using System;
using System.Collections.Generic;
using System.Web;
using Ext.Net;

public partial class pages_test : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    ResourceManager res_man = new ResourceManager();
    res_man.IDMode = IDMode.Explicit;
    res_man.DisableViewState = true;
    res_man.AjaxViewStateMode = Ext.Net.ViewStateMode.Disabled;
    res_man.DirectMethodNamespace = "dm";

    this.Controls.Add(res_man);

    Panel panel1 = new Panel() {ID = "panel1", Width = 300, Height = 200 };
    form1.Controls.Add(panel1);

    ComboBox combo1 = new ComboBox() { ID = "combo1" };
    combo1.Items.Add(new ListItem("NOT NULL"));
    combo1.Items.Add(new ListItem("NULL"));
    panel1.Items.Add(combo1);

    combo1.Value = "NULL";
  }
}