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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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