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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

<%@ 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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