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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 114001 to 115000 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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