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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 109001 to 110000 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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