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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 38001 to 39000 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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