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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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