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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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