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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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