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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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