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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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