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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 146001 to 147000 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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