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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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