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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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