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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 99001 to 100000 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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