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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 22001 to 23000 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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