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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 53001 to 54000 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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