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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 249001 to 250000 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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