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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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