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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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