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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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