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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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