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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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