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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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