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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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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