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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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