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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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