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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 211001 to 212000 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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