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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 238001 to 239000 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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