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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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