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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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