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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 58001 to 59000 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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