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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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