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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 12001 to 13000 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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