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


...101 102 103 104 105 106 107 108 109 110 ... Item 100001 to 101000 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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