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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 134001 to 135000 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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