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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 116001 to 117000 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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