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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 91001 to 92000 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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