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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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