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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 90001 to 91000 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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