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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 251001 to 252000 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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