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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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