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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 18001 to 19000 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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