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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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