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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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