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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 39001 to 40000 of 300000 Page: of 300 GoPage 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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