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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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