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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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