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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 31001 to 32000 of 300000 Page: of 300 GoPage size:

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- 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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