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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 241001 to 242000 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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