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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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