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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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