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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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