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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 72001 to 73000 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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