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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 16001 to 17000 of 300000 Page: of 300 GoPage size:

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

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

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>
<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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