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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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