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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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