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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 118001 to 119000 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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