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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

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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