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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 19001 to 20000 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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