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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 90001 to 91000 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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