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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 122001 to 123000 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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