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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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