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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 258001 to 259000 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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