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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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