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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 50001 to 51000 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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