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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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