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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 231001 to 232000 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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