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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 37001 to 38000 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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