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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 258001 to 259000 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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