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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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