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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 17001 to 18000 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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