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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 50001 to 51000 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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