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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 50001 to 51000 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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