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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 63001 to 64000 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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