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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 115001 to 116000 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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