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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 298001 to 299000 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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