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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 41001 to 42000 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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