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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 23001 to 24000 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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