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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 287001 to 288000 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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