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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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