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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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