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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 235001 to 236000 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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