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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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