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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 119001 to 120000 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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