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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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