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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 271001 to 272000 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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