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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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