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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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