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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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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