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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 33001 to 34000 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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