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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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