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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 96001 to 97000 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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