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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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