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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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