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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 47001 to 48000 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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