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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 275001 to 276000 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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