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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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