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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 288001 to 289000 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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