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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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