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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 44001 to 45000 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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