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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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