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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 91001 to 92000 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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