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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 99001 to 100000 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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