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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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