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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 99001 to 100000 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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