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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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