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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 18001 to 19000 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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