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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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