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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 279001 to 280000 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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