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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 15001 to 16000 of 300000 Page: of 300 GoPage 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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