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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 128001 to 129000 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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