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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 92001 to 93000 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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