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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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