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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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