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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 65001 to 66000 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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