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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 257001 to 258000 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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