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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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