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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 57001 to 58000 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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