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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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