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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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