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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 20001 to 21000 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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