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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 266001 to 267000 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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