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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 7001 to 8000 of 300000 Page: of 300 GoPage 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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