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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 289001 to 290000 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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