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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 251001 to 252000 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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