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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 50001 to 51000 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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