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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 52001 to 53000 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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