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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 27001 to 28000 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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