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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 53001 to 54000 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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