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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 51001 to 52000 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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