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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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