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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 81001 to 82000 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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