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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 230001 to 231000 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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