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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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