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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 236001 to 237000 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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