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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 278001 to 279000 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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