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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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