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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 20001 to 21000 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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