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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 90001 to 91000 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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