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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 39001 to 40000 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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