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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 239001 to 240000 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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