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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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