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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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