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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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