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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 58001 to 59000 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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