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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 35001 to 36000 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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