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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 49001 to 50000 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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