Please privide runnable test case
Here is my test case and it works fine
<%@ Page Language="C#" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
if (!X.IsAjaxRequest)
{
this.BindData();
}
}
protected void Store1_ReadData(object sender, StoreReadDataEventArgs e)
{
this.BindData();
}
private void BindData()
{
this.Store1.DataSource = new object[]
{
new object[] { 1, 1, "Text 1", DateTime.Now.Date },
new object[] { 2, 2, "Text 2", DateTime.Now.Date },
new object[] { 3, 3, "Text 3", DateTime.Now.Date },
new object[] { 4, 4, "Text 4", DateTime.Now.Date },
new object[] { 5, 5, "Text 5", DateTime.Now.Date },
new object[] { 6, 6, "Text 6", DateTime.Now.Date },
new object[] { 7, 7, "Text 7", DateTime.Now.Date },
new object[] { 8, 8, "Text 8", DateTime.Now.Date },
new object[] { 9, 9, "Text 9", DateTime.Now.Date }
};
this.Store1.DataBind();
}
</script>
<!DOCTYPE html>
<html>
<head runat="server">
<title>ComponentColumn Editor - Ext.NET Examples</title>
<link href="/resources/css/examples.css" rel="stylesheet" />
</head>
<body>
<form runat="server">
<ext:ResourceManager runat="server" />
<h1>ComponentColumn as Editor</h1>
<ext:Button runat="server" Text="Reload" Handler="#{Store1}.reload();" />
<ext:GridPanel
runat="server"
Title="ComponentColumn Editor"
Width="600"
Height="300">
<Store>
<ext:Store ID="Store1" runat="server" OnReadData="Store1_ReadData">
<Model>
<ext:Model runat="server">
<Fields>
<ext:ModelField Name="IntField" Type="Int" />
<ext:ModelField Name="ComboField" Type="Int" />
<ext:ModelField Name="TextField" Type="String" />
<ext:ModelField Name="DateField" Type="Date" />
</Fields>
</ext:Model>
</Model>
</ext:Store>
</Store>
<ColumnModel runat="server">
<Columns>
<ext:ComponentColumn
runat="server"
Editor="true"
DataIndex="IntField"
Flex="1"
Text="Integer">
<Component>
<ext:NumberField runat="server" />
</Component>
</ext:ComponentColumn>
<ext:ComponentColumn
runat="server"
Editor="true"
DataIndex="ComboField"
Flex="1"
Text="ComboBox">
<Component>
<ext:ComboBox runat="server">
<Items>
<ext:ListItem Text="Item 1" Value="1" Mode="Raw" />
<ext:ListItem Text="Item 2" Value="2" Mode="Raw" />
<ext:ListItem Text="Item 3" Value="3" Mode="Raw" />
<ext:ListItem Text="Item 4" Value="4" Mode="Raw" />
<ext:ListItem Text="Item 5" Value="5" Mode="Raw" />
<ext:ListItem Text="Item 6" Value="6" Mode="Raw" />
<ext:ListItem Text="Item 7" Value="7" Mode="Raw" />
<ext:ListItem Text="Item 8" Value="8" Mode="Raw" />
<ext:ListItem Text="Item 9" Value="9" Mode="Raw" />
</Items>
</ext:ComboBox>
</Component>
</ext:ComponentColumn>
<ext:ComponentColumn
runat="server"
Editor="true"
DataIndex="TextField"
Flex="1"
Text="Text">
<Component>
<ext:TextField runat="server" />
</Component>
</ext:ComponentColumn>
<ext:ComponentColumn
runat="server"
Editor="true"
DataIndex="DateField"
Flex="1"
Text="Date">
<Component>
<ext:DateField runat="server" />
</Component>
</ext:ComponentColumn>
</Columns>
</ColumnModel>
</ext:GridPanel>
</form>
</body>
</html>