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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 35001 to 36000 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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