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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 268001 to 269000 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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