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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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