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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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