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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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