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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 121001 to 122000 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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