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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 92001 to 93000 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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