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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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