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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 3001 to 4000 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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