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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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