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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 276001 to 277000 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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