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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 13001 to 14000 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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