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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 31001 to 32000 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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