Feb 24, 2010, 2:28 PM
Issue with dynamic store and grid- Store is undefined
Hi,
My requirement is to build a store and grid objects dynamically on click of button. I am always getting error as store is undefined. Please see below code and help me.
My requirement is to build a store and grid objects dynamically on click of button. I am always getting error as store is undefined. Please see below code and help me.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="GridColumns._Default" %>
<%@ Register Assembly="Coolite.Ext.Web" Namespace="Coolite.Ext.Web" 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>
</head>
<body>
<form id="form1" runat="server">
<ext:ScriptManager ID="ScriptManager1" runat="server">
</ext:ScriptManager>
<ext:Panel ID="Panel1" runat="server" Frame="True" Height="300" Title="Title" Width="400px">
<Body>
</Body>
<Buttons>
<ext:Button ID="buttonone" runat="server" Text="Click me">
<AjaxEvents>
<Click OnEvent="button1_click">
</Click>
</AjaxEvents>
</ext:Button>
</Buttons>
</ext:Panel>
</form>
</body>
</html>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Data;
using System.Web.UI.WebControls;
using Coolite.Ext.Web;
namespace GridColumns
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
public void button1_click(object sender, AjaxEventArgs e)
{
CreateDataGrid();
}
private void CreateDataGrid()
{
Store store = new Store();
store.ID = "myStore";
store.Reader.Add(new JsonReader() { ReaderID = "myreader" });
Panel1.BodyControls.Add(store);
GridPanel grid = new GridPanel();
grid.ID = "mygrid";
grid.Width = Unit.Pixel(100);
grid.Height = Unit.Pixel(100);
grid.StoreID = store.ClientID;
DataTable dt = new DataTable("mytable");
dt.Columns.Add("Name");
dt.Columns.Add("Number");
for (int i = 0; i < 5; i++)
{
DataRow dr = dt.NewRow();
dr[0] = "name" + i.ToString();
dr[1] = i.ToString();
dt.Rows.Add(dr);
}
foreach (DataColumn item in dt.Columns)
{
RecordField r = new RecordField(item.ColumnName);
store.Reader[0].Fields.Add(r);
grid.ColumnModel.Columns.Add(new Column() { DataIndex = item.ColumnName, Header = item.ColumnName });
}
store.DataSource = dt;
store.DataBind();
Panel1.BodyControls.Add(store);
Panel1.BodyControls.Add(grid);
}
}
}
