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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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