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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 109001 to 110000 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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