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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 111001 to 112000 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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