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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 54001 to 55000 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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