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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 117001 to 118000 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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