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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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