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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 17001 to 18000 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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