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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 264001 to 265000 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="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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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