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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 39001 to 40000 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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