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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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