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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 57001 to 58000 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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