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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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