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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 64001 to 65000 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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