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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 120001 to 121000 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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