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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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