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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 86001 to 87000 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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