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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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