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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 123001 to 124000 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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