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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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