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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 37001 to 38000 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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