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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 271001 to 272000 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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