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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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