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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 123001 to 124000 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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