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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 269001 to 270000 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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