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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 86001 to 87000 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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