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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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