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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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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