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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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