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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 12001 to 13000 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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