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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 95001 to 96000 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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