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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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