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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 243001 to 244000 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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