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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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