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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 107001 to 108000 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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