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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 38001 to 39000 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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