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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 GoPage 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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