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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 17001 to 18000 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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