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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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