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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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