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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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