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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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