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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 48001 to 49000 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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