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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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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