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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 10001 to 11000 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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