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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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