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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 84001 to 85000 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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