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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 90001 to 91000 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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