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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 10001 to 11000 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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