Grid - Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Marketing Assistant	Hanna Moos	Austria	1 2 3 4 5
2	Owner	Antonio Moreno	Austria	1 2 3 4 5
3	Sales Representative	Georg Pipps	England	1 2 3 4 5
4	Sales Manager	Jaime Yorres	Argentina	1 2 3 4 5
5	Sales Consultant	Matti Karttunen	Bulgaria	1 2 3 4 5
6	Sales Representative	Matti Karttunen	Austria	1 2 3 4 5
7	Sales Consultant	Elizabeth Lincoln	Spain	1 2 3 4 5
8	Sales Representative	Paul Henriot	USA	1 2 3 4 5
9	Marketing Manager	Georg Pipps	Spain	1 2 3 4 5
10	Accountant	Patricio Simpson	Brazil	1 2 3 4 5
11	Sales Associate	Patricio Simpson	USA	1 2 3 4 5
12	Marketing Assistant	Georg Pipps	Argentina	1 2 3 4 5
13	Owner	Matti Karttunen	USA	1 2 3 4 5
14	Sales Consultant	Paul Henriot	Austria	1 2 3 4 5
15	Owner	Georg Pipps	Argentina	1 2 3 4 5
16	Sales Agent	Pascale Cartrain	France	1 2 3 4 5
17	Marketing Assistant	Georg Pipps	France	1 2 3 4 5
18	Sales Representative	Matti Karttunen	Argentina	1 2 3 4 5
19	Sales Associate	Antonio Moreno	Brazil	1 2 3 4 5
20	Sales Manager	Paul Henriot	USA	1 2 3 4 5
21	Sales Consultant	Elizabeth Lincoln	Germany	1 2 3 4 5
22	Sales Agent	Patricio Simpson	Spain	1 2 3 4 5
23	Owner	Patricio Simpson	Argentina	1 2 3 4 5
24	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
25	Sales Consultant	Howard Snyder	USA	1 2 3 4 5
26	Marketing Manager	Elizabeth Lincoln	USA	1 2 3 4 5
27	Sales Representative	Antonio Moreno	Bulgaria	1 2 3 4 5
28	Sales Representative	Paul Henriot	Germany	1 2 3 4 5
29	Sales Manager	Hanna Moos	Spain	1 2 3 4 5
30	Marketing Manager	Pascale Cartrain	England	1 2 3 4 5
31	Marketing Assistant	Howard Snyder	Germany	1 2 3 4 5
32	Owner	Antonio Moreno	Argentina	1 2 3 4 5
33	Accounting Manager	Patricio Simpson	Germany	1 2 3 4 5
34	Marketing Manager	Paul Henriot	Germany	1 2 3 4 5
35	Sales Consultant	Georg Pipps	Bulgaria	1 2 3 4 5
36	Accountant	Elizabeth Lincoln	USA	1 2 3 4 5
37	Sales Associate	Georg Pipps	France	1 2 3 4 5
38	Sales Consultant	Jaime Yorres	Germany	1 2 3 4 5
39	Sales Manager	Howard Snyder	Brazil	1 2 3 4 5
40	Sales Consultant	Patricio Simpson	Austria	1 2 3 4 5
41	Accounting Manager	Antonio Moreno	Italy	1 2 3 4 5
42	Owner	Pascale Cartrain	USA	1 2 3 4 5
43	Sales Manager	Elizabeth Lincoln	England	1 2 3 4 5
44	Sales Manager	Jaime Yorres	England	1 2 3 4 5
45	Accounting Manager	Georg Pipps	England	1 2 3 4 5
46	Marketing Assistant	Antonio Moreno	Austria	1 2 3 4 5
47	Sales Consultant	Paul Henriot	England	1 2 3 4 5
48	Sales Associate	Antonio Moreno	USA	1 2 3 4 5
49	Owner	Paul Henriot	England	1 2 3 4 5
50	Sales Associate	Paul Henriot	Spain	1 2 3 4 5
51	Sales Manager	Hanna Moos	Argentina	1 2 3 4 5
52	Sales Manager	Patricio Simpson	Italy	1 2 3 4 5
53	Marketing Assistant	Elizabeth Lincoln	Germany	1 2 3 4 5
54	Owner	Georg Pipps	USA	1 2 3 4 5
55	Marketing Manager	Patricio Simpson	France	1 2 3 4 5
56	Sales Representative	Howard Snyder	Italy	1 2 3 4 5
57	Marketing Assistant	Georg Pipps	Italy	1 2 3 4 5
58	Sales Representative	Hanna Moos	Brazil	1 2 3 4 5
59	Sales Consultant	Georg Pipps	USA	1 2 3 4 5
60	Accounting Manager	Georg Pipps	USA	1 2 3 4 5
61	Sales Representative	Patricio Simpson	Austria	1 2 3 4 5
62	Sales Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
63	Sales Representative	Georg Pipps	Italy	1 2 3 4 5
64	Sales Agent	Paul Henriot	Brazil	1 2 3 4 5
65	Sales Manager	Jaime Yorres	Germany	1 2 3 4 5
66	Marketing Manager	Matti Karttunen	Austria	1 2 3 4 5
67	Sales Associate	Matti Karttunen	France	1 2 3 4 5
68	Marketing Manager	Hanna Moos	Spain	1 2 3 4 5
69	Accounting Manager	Paul Henriot	Italy	1 2 3 4 5
70	Owner	Pascale Cartrain	Argentina	1 2 3 4 5
71	Sales Manager	Paul Henriot	Germany	1 2 3 4 5
72	Marketing Assistant	Antonio Moreno	Austria	1 2 3 4 5
73	Sales Manager	Howard Snyder	Argentina	1 2 3 4 5
74	Sales Consultant	Elizabeth Lincoln	Italy	1 2 3 4 5
75	Sales Manager	Paul Henriot	USA	1 2 3 4 5
76	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
77	Owner	Antonio Moreno	Italy	1 2 3 4 5
78	Sales Consultant	Pascale Cartrain	France	1 2 3 4 5
79	Marketing Manager	Jaime Yorres	Italy	1 2 3 4 5
80	Accountant	Hanna Moos	Germany	1 2 3 4 5
81	Sales Representative	Elizabeth Lincoln	USA	1 2 3 4 5
82	Accounting Manager	Antonio Moreno	Italy	1 2 3 4 5
83	Sales Representative	Howard Snyder	England	1 2 3 4 5
84	Marketing Manager	Matti Karttunen	England	1 2 3 4 5
85	Accountant	Georg Pipps	Italy	1 2 3 4 5
86	Sales Associate	Pascale Cartrain	Spain	1 2 3 4 5
87	Sales Agent	Paul Henriot	Germany	1 2 3 4 5
88	Sales Agent	Antonio Moreno	France	1 2 3 4 5
89	Owner	Georg Pipps	Austria	1 2 3 4 5
90	Sales Consultant	Antonio Moreno	Italy	1 2 3 4 5
91	Sales Agent	Pascale Cartrain	Italy	1 2 3 4 5
92	Owner	Patricio Simpson	Bulgaria	1 2 3 4 5
93	Marketing Assistant	Patricio Simpson	Austria	1 2 3 4 5
94	Owner	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
95	Sales Representative	Jaime Yorres	USA	1 2 3 4 5
96	Sales Representative	Georg Pipps	Argentina	1 2 3 4 5
97	Sales Representative	Pascale Cartrain	Brazil	1 2 3 4 5
98	Sales Agent	Pascale Cartrain	Argentina	1 2 3 4 5
99	Marketing Manager	Matti Karttunen	England	1 2 3 4 5
100	Sales Manager	Pascale Cartrain	France	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

Isolate this demo as a stand-alone application

About this demo
C#
VB

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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