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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 38001 to 39000 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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