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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 12001 to 13000 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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