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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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