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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 25001 to 26000 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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