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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 270001 to 271000 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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