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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 46001 to 47000 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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