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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 44001 to 45000 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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