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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 33001 to 34000 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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