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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 32001 to 33000 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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