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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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