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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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